Function and operation
The potential-free relay contact sensor is a versatile relay output (switchable relay contact) for controlling various devices and systems. It offers both relay and potential-free switching functions, making it suitable for numerous applications.
The sensor is ideal for security systems, HVAC controls, and other automation tasks where reliable device switching is essential. Its ability to function as both a relay and a potential-free contact expands its application possibilities in different configurations.
It can provide 5 A of power for magnetic locks, bolt locks, electromagnets, sirens, light sources, heaters, air conditioners, and more.
It can be connected to any Didactum unit with 12 V relay outputs and managed via the Didactum web interface.
LED display
Description: Sensor LED display
The sensor features a red LED display that protrudes from the top cover.
| Normal | Inverted | |
|---|---|---|
| Contact is closed | Red | - |
| Contact is open | - | Red |
Connection of the switching contact
The switching contact can only be connected to the 12 V, 0.25 A outputs of the Didactum monitoring system.
The following diagram shows how to connect two relay contact sensors to the monitoring system.
Application examples with installation diagram
Example 1.
Use of the relay contact sensor to control a device with a potential-free contact input.
Example 2
Controlling a siren, light source, and heating
Example 3.
Control of a magnetic closure, electric motor, solenoid, electromagnet