Thanks to its impact-resistant housing made of high-quality plastic, the mechanical surface-mounted double thermostat is very robust and can also be used under harsh conditions. The measuring systems used work according to the liquid expansion principle and can be used without any problems up to a maximum permissible sensor temperature of 60 °C. The spiral sensors made of high-quality stainless steel have a diameter of 17 mm and are attached to the side of the housing. The maximum permissible ambient temperature on the housing (protection class IP54) is 50 °C. The housing is attached directly to the lower part of the housing as a wall mount. With the help of a screwdriver, the desired switch-off temperatures can be set independently of one another on a scale after removing the housing cover. The set temperature is visible at all times through a viewing window in the housing cover. The temperature monitors are characterized by a high switching point accuracy of +/-3% in the upper third of the scale. The built-in temperature compensation reduces ambient temperature influences on the switching head to a minimum. A decisive advantage is that no additional auxiliary power is required for temperature measurement. The electrical connection is made using PushIn© terminals, which significantly reduces installation time compared to conventional screw connections. The maximum permissible switching capacity is AC 230 volts / 16 A. The temperature monitors have a switching difference (hysteresis) of approx. 3 K. Both systems automatically switch back to their original state when the switch-off temperature falls below this value. The thermostat is very flexible and is used both in room temperature monitoring and in building automation. It can also be used in heating, air conditioning and ventilation technology. Other areas of application include temperature monitoring in laboratory and climate cabinets. The device is approved in accordance with DIN EN 14597 and has
