this control ensures that your auxiliary heat stages only energize when needed

As a genuine Lochinvar water heater part

or 24-volt AC secondary leads to support a wide range of signaling devices and smart home hardware

and 16C21M-4101 models

when mounting horizontally

Tekmar Controls 090 Snow/Ice Sensor 326058-756 this control ensures that yourThe Tekmar 090 Snow Ice Sensor is a precision engineered, in slab automated component designed for hydronic snow melting systems. This sensor integrates directly into the 091 sensor socket to monitor slab temperature, surface temperature, and moisture levels simultaneously. By providing real time data to compatible controls, it ensures the system only activates when precipitation is detected at freezing thresholds, significantly reducing energy