Didactum Smoke Sensor
€79.00
Available, delivery time: 1-2 weeks
Early Fire Detection for Server Rooms and Critical Infrastructure
The Didactum Smoke Sensor is an analog, photoelectric smoke detector for reliable monitoring of smoke and fire development in indoor spaces. It is suitable for use in rooms, buildings, technical areas, and server racks, and is connected as a plug-and-play sensor directly to an analog port of a Didactum Monitoring System.
Multiple smoke sensors can be connected in a daisy chain: The system then displays all sensors connected in series as a single element on the analog port. If any sensor in the chain is triggered, this element is alarmed accordingly in the web interface. For larger monitoring areas, the maximum number of sensors can additionally be increased via a sensor expansion unit.
Construction of the Smoke Sensor
The smoke sensor consists of a compact plastic housing with ventilation openings and has a two-part design: a base to be permanently mounted and a plug-on sensor head.
Sensor Head
Contains the photoelectric detection unit and the red status LED. It is plugged onto the base and locked by twisting.
Base
Is firmly screwed to the ceiling with the supplied mounting plate and accommodates the sensor head and cable connections.
Two RJ12 Connectors
Enable connection to the monitoring system and the forwarding of additional smoke sensors in a daisy chain.
Ventilation Openings
Allow ambient air to enter the housing so that smoke particles can reliably reach the detection unit.
Important Notice: The smoke sensor is a pure analog sensor and cannot be operated independently. It works exclusively in conjunction with a Didactum Monitoring System, to the analog port of which it is connected.
Installation with the Supplied Mounting Plate
The smoke sensor is installed on the ceiling exclusively with the included mounting plate.
- Remove sensor head from the base
- Fasten the base to the mounting plate with the supplied M3.5 × 10 mm screws
- Replace the sensor head and secure it by twisting until it clicks into place
- Fasten the mounting plate to the ceiling with the M3.5 × 19 mm screws
- Remove the red protective cap from the sensor
Important Installation Notes: The smoke sensor must always be mounted with the sensor head pointing downward – in any other position, reliable detection of smoke cannot be guaranteed. Additionally, the sensor must be positioned so that sufficient air can circulate and the ventilation slots are not covered. The maximum installation height is 6 m.
Connection to the Monitoring System
One end of the supplied RJ11/RJ12 cable is connected to the monitoring system, the other end to one of the two inputs on the smoke sensor. Up to 10 smoke sensors can be connected in series on one analog port: To do this, another RJ11 cable is plugged into the still free input of the already connected sensor and connected to the next sensor in the chain.
As soon as the system recognizes the smoke sensor, the LED on the sensor flashes weakly once per second – this indicates the correct connection status in normal operation.
Testing the Smoke Sensor
The function of the sensor can be easily and non-destructively tested during operation.
- Insert a needle or unfolded paperclip into the small opening on the sensor cover
- Gently move the needle until the previously weakly blinking LED lights up brightly
- Bright illumination confirms that the sensor is in a functional state
- After testing, return the sensor to normal state: either by briefly disconnecting it from the system or by restarting the sensor via the "Smoke Sensors" tab in the web interface
Safety Instructions and Requirements for the Installation Location
- The regulations applicable in the respective country of installation as well as national accident prevention regulations must be observed; also any internal operational work, operating, and safety regulations.
- The specified technical specifications and limit values must not be exceeded under any circumstances – this applies in particular to the permissible ambient temperature range and the IP protection class.
- If a higher IP protection class is required for a specific application, the smoke sensor must be installed in a suitable additional housing with the corresponding protection class.
- Disturbing electrical systems with high-frequency emissions should be avoided near the installation location to minimize electromagnetic interference.
What is Included in the Scope of Delivery
Please check the scope of delivery for completeness upon receipt and immediately report any missing or damaged parts to your supplier.
- Smoke Sensor (Base + Sensor Head)1 piece
- RJ11-6P4C Cable, 2 m1 piece
- Mounting Plate1 piece
- Screws M3.5 × 10 mm2 pieces
- Screws M3.5 × 19 mm2 pieces
- Nuts M3.52 pieces
- Washers M3.52 pieces
Application Examples
- Server rooms: Early detection of smoke development in server racks or cable trays
- Data centers: Installation of multiple sensors in different zones for quick localization
- Critical infrastructure: Supplementation of power suppliers, waterworks, or medical facilities
- Technical rooms: Protection of distribution cabinets and technical systems against fire damage
- Industrial plants: Protection of machines and control electronics in production environments
- Buildings in general: Installation in rooms with increased fire risk up to a ceiling height of 6 m
Why This Smoke Sensor is the Right Choice
Plug & Play
Direct connection to any analog port, automatic recognition by the system.
Daisy-Chain Capable
Up to 10 sensors in series on a single analog port.
Simple Function Test
Testing at any time with a needle or paperclip, completely without additional tools.
Long Service Life
Average useful life of at least 10 years.
Large Range
Up to 150 m distance to the monitoring or expansion unit.
Clear Status Display
Red LED clearly indicates normal operation and alarm status.
Expandable
Additional sensors can be connected via sensor expansion units.
Made in EU
Developed and manufactured in the European Union.
More About Analog Sensors
Tutorial: Analog Sensors Part 1
Basic instructions for connection, configuration, and operation of analog sensors on Didactum Monitoring Systems.
To the Tutorial →Frequently Asked Questions
Can the smoke sensor be operated independently?
No. The smoke sensor is a pure analog sensor and works exclusively in conjunction with a Didactum Monitoring System, to the analog port of which it is connected.
In which position must the sensor be mounted?
The smoke sensor must always be mounted with the sensor head pointing downward. In any other position, reliable detection of smoke cannot be guaranteed. Additionally, the ventilation slots must remain free and must not be covered.
How many smoke sensors can be combined on one port?
Up to 10 smoke sensors can be connected in a daisy chain on one analog port. The system displays all sensors connected in series as a single element; if any sensor in the chain is triggered, this element is alarmed in the web interface.
How do I test whether the smoke sensor is functioning correctly?
Insert a needle or unfolded paperclip into the small opening on the sensor cover and move it gently until the LED lights up brightly. Afterwards, the sensor can be returned to normal state by briefly disconnecting it from the system or via a restart in the web interface.
What does the blinking of the LED in normal operation mean?
As soon as the monitoring system has recognized the smoke sensor, the LED flashes weakly once per second – this indicates the correct connection status. If the LED lights up brightly, smoke has been detected or the sensor is in test mode.
How can the number of smoke sensors be expanded?
Via a sensor expansion unit, the maximum number of connectable sensors and the total length of the system can be increased. This way, larger buildings or multiple rooms can be covered with additional smoke sensors.
What is the maximum installation height?
The maximum installation height is 6 m. Additionally, the sensor must be positioned so that sufficient air can circulate and the ventilation slots are not covered.
Questions About the Didactum Smoke Sensor?
Our support team in Germany will advise you free of charge on selection, installation, and configuration.
Didactum Smoke Sensor
Function
- Analog smoke detector for detecting smoke and fire development indoors
- Suitable for rooms, buildings, technical areas and server cabinets
- Early alerting to increase the safety of people and systems
- Direct connection to analog ports of Didactum monitoring systems
- Can be cascaded (daisy chain) for larger monitoring areas
- Expandable via Sensor Extension Units
Sensing
- Sensor type: Analog
- Detection principle: Photoelectric
Connections
- 2 x RJ12 ports
- Daisy chain: up to 10 sensors can be connected in series
Electrical Data
- Power consumption: 100 mW
- Maximum distance: 150 m to the monitoring or extension unit
Environmental Conditions
- Operating temperature:
- Optimal: -10 °C to +55 °C
- Extended: -10 °C to +80 °C
- Humidity: 5% to 95% (non-condensing)
- Storage temperature: -10 °C to +55 °C
- Storage humidity: 5% to 95% (non-condensing)
Mechanical Data
- Dimensions: Ø 100 × 45 mm
- Sensor weight: 150 g
- Packaging weight: 290 g
- Mounting: ceiling mount
- Status indicator: red LED
Further Properties
- Maximum installation height: 6 m
- Average lifespan: ≥ 10 years
General
- Origin: EU
- HS Code: 8531 10 950
Can be used with monitoring unit:
Can be used with extension unit:
Manufacturer information:
Didactum® Security GmbH
Im Mühlenfeld 4
48163 Münster
Deutschland
Fon:
(+49) 250 19 71 63 54 / (+49) 171 33 11 577
Email: info@didactum-security.de
