Function and purpose
The CAN Combined Smoke, Temperature & Humidity Sensor is a versatile sensor that integrates smoke, humidity, and temperature monitoring into a single device. Thanks to its high smoke sensitivity, it detects even the smallest smoke concentrations, making it an indispensable tool for early fire detection in critical environments.
In addition, the CAN Combined Smoke, Temperature & Humidity Sensor provides precise temperature and humidity readings, ensuring comprehensive environmental monitoring. This multifunctional sensor is ideal for data centers, server rooms, and other facilities where reliable environmental and security monitoring is essential.
Each environmental parameter of the CAN combined smoke, temperature, and humidity sensor is displayed in a separate element of the web interface. This allows you to define individual thresholds and trigger events such as notifications and other actions.
CAN devices and sensors can be interconnected. Up to 10–32 CAN devices can be connected in series. You can connect CAN sensors or extensions to a single CAN bus line.
Physical description
1. Operation LEDs:
WHITE LED – the sensor is ready for operation, blinks every few seconds, Normal mode;
RED LED – alarm indication, Alarm mode;
2. CAN bus ports (numeration does not matter, any port can be used on either side)
3. Configuration LEDs:
Red LED – the sensor is connected to the system;
Blue LED – the CAN configuration has started;
4. Temperature and humidity sensor
5. Termination switch (Termination should be set to “ON” if the sensor is the last device in a CAN bus chain.)
Installation instructions
It is essential that the smoke detector is always mounted with the sensor head facing downwards. Smoke detection cannot be guaranteed in any other position. The smoke detector must also be installed in a location with adequate ventilation and ensure that the ventilation slots are not obstructed.
Mounting with plastic anchors. (Image 1)
The sensor is mounted using a metal bracket (mounting plate). This is included with the sensor. (Image 2)
- Remove the smoke detector head from the base.
- Attach the smoke detector base to the mounting plate using the supplied M4 x 10 screws.
- Replace the detector head onto the base and tighten it until it clicks into place.
- Attach the mounting plate to the housing frame using the 4.8 x 19 screws.
- Remove the red protective cap.
Connecting the sensor
Connect one end of the RJ11/RJ12 cable to the CAN port of the monitoring unit and the other end to any CAN input on the smoke detector.
Up to 10 sensors can be connected to one CAN port. To do this, connect a new RJ11 cable to a free input on an already connected smoke detector and the other end to the next smoke detector in the chain. See the diagram below.
The pin assignment for the RJ11 or RJ12 cables can be found in the diagram below. After the system starts, configure the CAN bus. Once configured, the LED on the smoke detector will blink faintly once per second.
False alarms from the smoke detector
In general, electromagnetic interference can cause false alarms in smoke detectors. Excessive dust levels in the room air can also lead to false alarms. Therefore, smoke detectors should not be installed near fluorescent lights, among other things. There should also be no excessive air circulation (e.g., from cooling air from a ventilation or air conditioning system) near the smoke detector.
General Safety Instructions:
Please observe the national installation and accident prevention regulations for smoke detectors applicable in your country. Please also observe all operating instructions, such as work, operating, and safety regulations.
The specified technical specifications and limits must not be exceeded under any circumstances. This applies in particular to the specified ambient temperature range and the IP rating. If a higher IP rating is required for a specific application, the smoke detector must be installed in a suitable enclosure with the required IP rating.
CAN Combination Sensor for Smoke, Temperature & Humidity
