What is dry contact in room thermostat?
Apr 02, 2025
In the field of room thermostat, "dry contact" refers to a passive switching signal output by the thermostat. In order to understand this concept more clearly, we can explain it from the following aspects:
1.The nature of dry contact:
Dry contact is essentially a switch, which can be "closed" (connected) or "open" (separated).
This state change is used to transmit signals instead of power. Therefore, the dry contact itself does not carry voltage, it only provides information about the state of a switch.
2. Application in thermostat:
The thermostat controls the operation of external devices through dry contact output signals, such as:
Control heating or cooling equipment: When the indoor temperature reaches the set value, the thermostat can start or stop the heating or cooling equipment through dry contact signals.
Linkage with other control systems: Dry contact signals can be connected to other control systems, such as building automation systems, to achieve more complex temperature control strategies.
3. Why use dry contact:
Electrical isolation: Dry contact can achieve electrical isolation between the thermostat and the controlled equipment, improving the safety of the system.
Strong versatility: Dry contact signals can be compatible with a variety of devices with different voltages and currents, so they have a wide range of applications.
High reliability: Since dry contact has no complex electronic components, it has high reliability and stability.
Then which products in Beok product catalogue with dry contact, and what products that this product can work with such thermostat? The answer is all gas boilers with dry contact can work with our gas boiler heating room thermostat. That means, if the gas boiler with dry contact function, it will suitable with all our gas boiler thermostats. We have many options:
Wired Dry Contact Thermostat
This type thermostat not only can connect with dry contact gas boilers, it also can control electrical actuators for water underfloor heating system.
Wired dry contact thermostat
This type thermostat can control gas boilers with dry contact function. And it also can connect with floor sensor.
Wireless dry contact thermostat
This type thermostat is wireless type gas boiler heating thermostat, the receiver has dry contact terminal that can connect with gas boiler. And it also can connect with electrical thermal actuators.
Wired battery power WiFi thermostat
This type thermostat is WiFi drt contact thermostat that powered by 3 1.5V AA batteries. That is a new WiFi device that can power by batteries only, very convenient for using.
In summary:
The dry contact of the thermostat is a switch signal provided by the thermostat to other devices. This signal only notifies other devices that it should be "on" or "off" now. It does not provide voltage. Hope the above explanation can help you understand the dry contact of the thermostat.
