Quick Install Guide Temp & Humdity Sensor

This SNMP enabled multi sensor unit consists of one integrated smoke detector, one humidity and one temperature sensor. This combined smoke detection, humidity and temperature sensor unit belongs to the group of digital CAN sensors (Controller Area Network) of manufacturer Didactum. It is compatible with all IP based remote monitoring devices of the series 100 III / 400/500/500 DC / 500 II / 500 II DC / 600/ 700. The PDU 700 and PDU 750 can also be equipped with this multi sensor.

Note:

The Monitoring System 50 does not support digital CAN sensors.

Installation of the CAN sensor

It must be ensured that the smoke detection unit is always mounted with the sensor head facing downwards. In case of deviating installation, a detection of smoke or smoldering fire is not guaranteed! Take care that the sensor unit is reached by sufficient air circulation. Do not cover the ventilation slots. Also, this sensor must never be over-painted with paint or coating.

Connect the sensor unit to the remote monitoring unit

A 2 meter long RJ12 sensor cable is included with each sensor. If you need individual cable lengths, you will find the cable assignment of the Didactum CAN based sensors here. Connect one end of the RJ 12 sensor cable to the CAN bus port of the monitoring unit. The CAN port of the monitoring unit is labeled. The other end of the RJ12 cable is connected to the input port of this multi sensor.

A maximum of 10 digital CAN sensors or CAN units can be connected in series using suitable RJ12 sensor cables. For this, the free CAN port of the multi sensor is connected with the next CAN sensor or CAN unit.

Terminator jumper of the CAN sensor

Like all digital CAN sensors from manufacturer Didactum, this combined smoke, temperature and humidity sensor unit is equipped with a terminator. Basically, the last CAN sensor or CAN unit must be terminated by correct jumper settings.

Test your smoke detector

Insert a paper clip into the hole on the cover of the operational smoke detector. Hold the paperclip until the LED starts flashing. The flashing LED indicates that the smoke sensor is working properly. After checking the smoke detection unit, you must return the sensor to normal state. For this purpose you can a.) make a hard reset by disconnecting the sensor cable from the sensor unit for a 15 seconds or b.) make a soft reset of in the web gui of the networked remote monitoring unit under the menu item "Smoke Detector Reset". Then the tested smoke detector unit will return to normal state.

Possible false alarms of the smoke detector

In general, sources of electromagnetic interference can cause false alarms of smoke detectors. Excessively high levels of dust in the air can also lead to false alarms. Therefore, smoke detectors should not be installed in the near neon lights. Also, there should be no excessive air circulation in the near this optical smoke detector unit (e.g. strong air ventilation or air conditioning).

Technical specifications of combined smoke detector, humidity and temperature sensor:

  • Sensor type: Optical smoke detector, temperature and humidity sensor
  • Suitable for: Didactum Monitoring System 100 III / 400 / 500 II (DC) / 700 and PDUs
  • Equipped with SNMP OID: Yes.
  • Connection: via RJ12 sensor cable on the CAN port of IP networked monitoring unit
  • Display: Red LED for function display
  • Cascadable: a maximum of 10 CAN sensors or CAN units can be connected in series
  • Maximum CAN cable length: up to 305 meters (100 III IT monitoring system up to 205 meters)
  • Operating environment: -10 ° C to max. + 80 ° C  at 5 to 95% relative humidity (non-condensing)
  • Dimensions / Weight: Ø100 x 45mm / 290g (net)
  • Country of origin: Made in the EU

General safety instructions:

Please observe the national regulations for smoke detectors valid for your country. Please also observe all operating regulations, such as working, 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 degree of protection. If a higher IP degree of protection is required for a particular application, the smoke detector must be installed in a suitable housing with the required IP rating.