There have been several releases of the Smart Room Sensor. The User Guides applicable to each revision are provided here. It is important that the customer identifies the revision of the Smart Room Sensor they have. The current options are listed below. 

Revisions D & higher of the Smart Room Sensor can be identified by the screws used in the case and by the serial number label. These Smart Room Sensors have larger Phillips (cross) screws. The image below shows the bottom surface of a revision D Smart Room Sensor. 

Revisions A, B & C of the Smart Room Sensor can be identified by the screws used in the case and by the serial number label. These Smart Room Sensor have small Torx (5 lobe) screws. The image below shows the bottom surface of a revision B Smart Room Sensor.

The User Guide document for revisions A, B & C is available upon request. Please open a ticket to request this document.

1         Product Description

1.1       Overview

The Kona All-in-One Smart Room Sensor is a multi-purpose LoRaWAN IoT sensor packed into a very small form factor. The Smart Room Sensor is ideal for monitoring and reporting temperature, humidity, light, shock and open/closed doors and windows in the home environment. Additional sensing features such as leak and motion detection, as well as counting pulses from an external device, are also supported with the appropriate Smart Room Sensor model. Table 1 presents the available Kona All-in-One Smart Room Sensor models (Rev D), regional variants, corresponding LoRa channel plan [1], order codes, and production statuses. Table 2 presents the features available in each model.

Table 1:  Kona All-in-One Smart Room Sensor Models

 

Table 2:  Kona All-In-One Smart Room Sensor Feature Map

 

·         Temperature & Relative Humidity: Transducer reports temperature and relative humidity of the local environment.

·         Accelerometer: Configurable triggers allow the sensor to detect if it has been moved.

·         Light Detection: Light transducer reports the presence or absence of light using a configurable intensity threshold.

·         Motion Detection (PIR): A top mounted PIR transducer detects people moving within the sensor’s field of view (FoV).

·         Magnetic Switch: Digital On/Off sensing with an internal magnetic switch.

·         External Connection: External contacts connected with a short cable can be monitored for on/off states or used to count events.

·         Moisture Detection: Capacitive transducer mounted in the sensor case detects pooling water under the device for flood or leak detection.

 

Figure 1 illustrates the two Kona All-in-One Smart Room Sensor models[1]. Both models share the same external dimensions (42mm x 42mm x 14mm).

 

1.2       Physical Interfaces

Figure 2 illustrates the customer accessible interfaces for the Kona All-in-One Smart Room Sensor. All models share the same layout, though only functional interfaces are exposed in the case of each model.

 

1.3       Specifications

The Kona All-in-One Smart Room Sensor specifications are listed in Table 3.

Table 3:  Kona All-in-One Smart Room Sensor Specifications

    †From the manufacturer datasheet.

1.3.1      Temperature and Relative Humidity Transducer

All Smart Room Sensor models contain a Temperature and Relative Humidity Transducer. Details on the transducer range and accuracy are listed in Table 3. Note that because the transducer element is located inside the Sensor housing sense response time will not be immediate. An opening in the top cover surface directly over the transducer is designed to allow ambient air to contact the transducer. Response time can be reduced by forcing air to move over the Sensor in the region of the transducer opening.  MCU temperature is also reported. This is a less accurate temperature measurement using a transducer located in the Smart Room Sensor microprocessor.

The Sensor can be configured to report temperature and RH values or to report alarms based on a customer configured normal operating window. High and low alarm points can be set individually for temperature, humidity and MCU temperature. The sample rate for checking the transducers is user configurable with different sample rates settable if the measured value is inside or outside the normal operating window.

1.3.2      Acceleration Transducer

The Acceleration sensing is provided by an integrated 3 axis accelerometer. The Smart Room Sensor has 3 built in functions: Break-In detect, Impact detect and read acceleration. Each function can be configured to function in the customer's application and can be used individually or in combination. This transducer can also be disabled to conserve battery life.

Break-In detection is a function that senses repeated (4 or more) acceleration events and toggles an alarm if tripped. The magnitude of event acceleration and event collection time window are user settable. This function can be enabled or disabled.

Impact detection is a function that senses a single acceleration events and toggles an alarm if tripped. The magnitude of event acceleration is user settable. This function can be enabled or disabled.

Acceleration readings can be reported by the Sensor as X/Y/Z vector magnitudes or as a scalar net magnitude.

The rate at which acceleration is sampled is customer settable to 1 Hz, 10 Hz, 25 Hz, 50 Hz, 100 Hz, 200 Hz, or 400 Hz. Higher sample rates allow the detection of shorter acceleration events at the cost of shorter battery life. This is an important consideration when configuring the Break-In and Impact detection functions. The default sample rate is 1 Hz.

1.3.3      Light Detection Transducer

All Smart Room Sensor models contain an ambient light sensor. Light is measured through a light pipe located on the top surface of the Sensor. The Sensor is intended to detect the presence of light not to measure and report light intensity. The transducer is sensitive to human visible light with a peak sensitivity at 550 nm. The approximate light intensity sensing range is 5 lux to 1000 lux.

Light intensity event trigger points are customer settable over the range of 1 to 63. The customer needs to test their application for the appropriate trigger point. The sample rate is also customer settable with higher sample rates increasing battery consumption. If a light intensity greater than the set point is present, an event is reported.

1.3.4      Motion Detection (PIR) Transducer

The Smart Room Sensor PIR model contains a Motion Detector. The Motion Detection Transducer contains dual sense PIR elements and is configured to sense human motion within its FoV. When the transducer is combined with the Smart Room Sensor PIR lens, the sense range is 2.5 m covering a rectangular area of 7.5 m x 6.0 m. Figure 3 shows the sense pattern[2]. The rectangular boxes inside the pattern connected with X marks represent sensor element beams. To be most effective at detecting motion, the subject must move across sensor element beams. The Smart Room Sensor should be mounted so that the subjects move across its FoV and not towards or away from the Sensor. The sense pattern alignment to the Smart Room Sensor body is shown in Figure 4.

Note: Avoid exposing the PIR lens to strong UV light such as direct sunlight. Do not paint the surface of the lens or attempt to clean it. Any deformation of the lens will distort the sense pattern.

To conserve battery usage, the Smart Room Sensor only reports motion when it is first detected and when motion has not been detected for a configurable Grace Period. See Section 3.4.6 in the Smart Room Sensor Technical Reference Manual [2] for a detailed description of how the motion function is configured.

1.3.5      Magnetic Switch

All Smart Room Sensor models contain a Magnetic Switch. The location of the switch is shown in Figure 2. The Smart Room Sensor can be configured to activate based on the state of this switch and to report after a customer settable count of switch events.

A customer supplied magnet is required to activate the switch. To active the switch, a magnetic field of about 10 gauss (1 milli-tesla) must be applied to the edge of Sensor. Standex-Meder M4, M5 or M13 magnets are suggested but any magnet of sufficient strength can be used. Stronger magnets are required as the distance between the magnet and sensor increases. The customer must test their selected magnet in their application to verify functionality.

The switch function can be configured to sense open to close events, close to open events or both types of events. For example, if the Sensor is being used for sensing access to a door and is set to read both event types, it will record an event each time the door is opened and each time it is closed. The reporting of these events be set by the customer to report after a number of events has occurred. If it is set to 0, no events are reported. If it is set to 1, it reports after each event. If it is set to , it will report after  events. This setting has a range of ( ) 0 to 65535 events.

1.3.6      External Connection

The Smart Room Sensor Base model contains an External Connection. The internal, control, and reporting interfaces of the External Connection are similar to, but independent from, the Magnetic Switch in the Base model[3]. See Section 1.3.5 for a description of the event function configuration and reporting count feature, which are similar to those of External Connection.

The External Connection electrical interface is designed to be connected to an open-drain output, however the signal line can also be driven with digital signals at 1.8 V logic levels. The physical connector used and its mating connector are listed in Table 4. The Smart Room Sensor is not supplied with an external connection jumper cable. The link in Table 4 is a suggested cable. It is the customer's responsibility to modify the cable harness for their application. The connection cable length should NOT exceed 3 meters. Do not connect to an outdoor device. See Section 2.6 for connector pin assignment.

Table 4:  Kona All-in-One Smart Room Sensor Interface Connector Types

 

1.3.7      Moisture Detection Transducer

The Smart Room Sensor Base model contains a Moisture Detector. The Moisture Detection Transducer is built into the bottom surface of the Base model housing (screw side). The transducer senses changes in capacitance at the bottom surface of the Sensor housing in the presence of moisture. In other words, the moisture is detected at 0 mm range from the bottom surface (the bottom surface should get moist). This transducer is best suited to sensing the presence of water. The transducer is sensitive materials in the sensing region so the trigger set point for reporting the presence of water must be calibrated for each application. This transducer can also be used to sense liquids other than water or skin. The customer must evaluate each application and configure the trigger point as required.

A calibration command can be sent to the Sensor to set a "dry" condition. The alarm point can also be set directly as a value. Sample period for moisture detection can be set to one of 4 values: 16, 32, 64, or 128 seconds. Smaller sample periods (faster sampling) uses more energy and shortens battery life. The default sample period is 32 seconds.

2        Installation

2.1      Included Product and Installation Material

The following items are included with each sensor:

·         Kona All-In-One Smart Room Sensor

·         Mounting Bracket

·         User Guide

2.2       Safety Precautions

The following safety precautions should be observed:

·         The Kona All-in-One Smart Room Sensor is intended for indoor use only.

·         The Kona All-in-One Smart Room Sensor contains a lithium coin cell battery.

·         NEVER allow small children near batteries: if a battery is swallow, immediately seek medical attention.

·         To reduce risk of fire, explosion or chemical burns: replace only with approved 3 V CR2450 coin batteries; DO NOT recharge, disassemble, heat above 100°C (212°F) or incinerate battery.

·         The Kona All-in-One Smart Room Sensor requires an external magnet for use with the internal magnetic switch.

·         Keep magnets away from all children. Small magnets can pose a serious choking hazard. If multiple magnets are swallowed, immediately seek medical attention.

2.3       Unpacking and Inspection

The following should be considered during the unpacking of a new Kona All-in-One Smart Room Sensor :

1.      Inspect the shipping carton and report any significant damage to TEKTELIC.

2.      Unpacking should be conducted in a clean and dry location.

3.      Do not discard the shipping box or inserts as they will be required if a unit is returned for repair or re-configuration.

2.4       Required Equipment for Installation

There are no tools required for Kona All-in-One Smart Room Sensor installation.

2.5       Kona All-In-One Smart Room Sensor Mounting

Kona All-in-One Smart Room Sensor is designed to be mounted using the supplied mounting bracket. The bracket can be attached using screws or double-sided tape (not included).

When mounting on a vertical surface, ensure that the Smart Room Sensor will not be orientated with the case retaining screws towards the ceiling. This could cause the Smart Room Sensor to accidently slip off the mount and fall. There are no orientation concerns when the Smart Room Sensor is mounted to a horizontal surface.

2.6       External Connector Cable Installation

The Kona All-In-One Smart Room Sensor with external connection installation requires connection to an external device. The external device cable attaches to the 2-pin connector located on the top of the sensor.

Figure 5 shows the external connector signal locations. The connector is designed to be attached to an open-drain output, however the signal line can also be driven with digital signals at 1.8 V logic levels. The connection cable length should NOT exceed 3 meters. Also ensure that the cable connection is not routed outdoors.

3         Power UP and Commissioning, and Monitoring

3.1       Required Equipment

No special equipment is required to power on the Kona All-in-One Smart Room Sensor .

3.2       Power Up/Down Procedure

Once the sensor information has been added to the Network Server, pull out the battery tab to engage the battery. To turn off the device the battery must be removed, but to simply reset the device, the external reset button can be pushed; see Section 4.4 for description of the reset function. Refer to Section 5 Battery Replacement for instructions on battery removal.

4        Operation, Alarms, and Management

4.1      Configuration

The Kona All-In-One Smart Room Sensor supports a full range of Over-the-Air (OTA) configuration options. Specific technical details are available in the Smart Room Sensor Technical Reference Manual [2]. All configuration commands need to be sent OTA during a sensor’s downlink windows.

4.2      Default Configuration

The default configuration on the Base and External Connection Smart Room Sensor is:

·         Report Temperature, Humidity, and Battery Voltage every one (1) hour.

·         Report actuation of the Magnetic Switch and the Digital Input (i.e. External Connection) every one (1) actuation.

The default configuration on the PIR Smart Room Sensor is:

·         Report Temperature, Humidity, and Battery Voltage every one (1) hour.

·         Report the PIR status:

o   When PIR first detects motion.

o   When PIR has stopped detecting motion for more than five (5) minutes.

·         Report actuation of the Magnetic Switch every one (1) actuation.

4.3      LED Behaviour

See Figure 2 for the location and identification of the sensor LEDs.

During the boot and join procedure:

·         Both LEDs will come on briefly when power is first applied.

·     After a small delay (  second ) the LEDs will turn off and one of them will blink briefly.

o   If the System LED blinks, then all health checks on the board passed.

o   If the LoRa LED blinks, then one of the health checks failed. Consider replacing the battery, or moving the sensor to an environment within temperature range.

·         Immediately after, the join procedure will begin. During the time the System LED will blink continuously until the sensor has joined a network.

·         The LoRa LED will now blink whenever LoRa activity occurs on the sensor (transmitting or receiving packets)

During normal operation:

·         The LoRa LED will blink whenever LoRa activity occurs on the sensor (transmitting or receiving packets)

·         The System LED can be controlled via the downlink command interface.

4.4      Reset Button Function

There is a reset button on the device, that can be pushed by a pin, such as a paper clip (see Figure 2). The button should not be pushed hard. The reset is instant, i.e. the button does not need to be kept pushed. The reset restarts the microprocessor. All the FW load and configuration parameters in the Flash are remembered during the reset.

5         Battery Replacement

The Kona All-In-One Smart Room Sensor is powered by a standard CR2450 coin cell. Use only approved CR2450 cells when replacing the battery. The following are approved replacement cells:

·         Panasonic (Model CR2450)

·         Sony (Model CR2450B)

·         EVE Energy (Model CR2450)

·         FDK Corporation (Model CR2450)

In order to access the battery, remove the two screws securing the case. The screws are accessible on the bottom of the sensor case and require a Phillips screwdriver PH1:

            

·         Remove the two screws on the bottom of the case.

·         While holding the sensor with the bottom facing up, remove the bottom of the case by gently prying the case apart.

·         With the bottom removed, the coin cell holder is accessible.

·         Remove the coin cell from the holder by gently pushing the cell a little outwards (e.g. by a small screwdriver), then taking the cell from the other end and pulling it out as indicated in the image below:

·     Place the new cell in the holder. The top of the coin cell is marked with a  symbol indicating the positive terminal. This positive terminal must face up when replacing the cell. Push the cell into the holder until it hits the closed end of the holder.

·         Check for LED activity. If the LEDs are lit, the battery replacement was successful.

·         Replace the sensor cover and insert the two screws.

 

6        Compliance Statements

Federal Communications Commission

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

1.      This device may not cause harmful interference, and

2.      This device must accept any interference received, including interference that may cause undesired operation.

Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures:

·         Reorient or relocate the receiving antenna.

·         Increase the separation between the equipment and receiver.

·         Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

·         Consult the dealer or an experienced radio/TV technician for help.

⚠ WARNING: This product can expose you to chemicals including lead, nickel & carbon black, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.

Industry Canada

This Device complies with Industry Canada License-exempt RSS standard(s). Operation is subject to the following two conditions:

1.      This device may not cause interference, and

2.      This device must accept any interference, including interference that may cause undesired operation of the device.

Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (EIRP) is not more than that necessary for successful communication.

This radio transmitter (identify the device by certification number, or model number if (Category II) has been approved by Industry Canada to operate with the antenna types listed below with the maximum permissible gain and required antenna impedance for each antenna type indicated. Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device.

References

[1]	LoRa Alliance, "LoRaWAN 1.1 Regional Parameters," ver. 1.1, rev. B, Jan 2018.
[2]	TEKTELIC Communications Inc., "Smart Room Sensor Technical Reference Manual," ver 1.0.