The 26M106 Honeywell is a part of a control system for home heating and cooling. It is a two-speed, single-stage electronic control with a communication interface that is powered by 24VAC. This part is used to control motors and related accessories, including fan blower motors and damper actuators, in both residential and light commercial applications. It provides a wide range of features, including system diagnostics, manual/auto changeover, short cycle protection and battery backup power supply. This product features a secure, tamper-resistant design, allowing only authorized personnel to set, view and change settings. The 26M106 Honeywell is UL listed and UL certified.