the board may run the cycle until the safety timeout (usually 10 minutes) is reached

For standard 24 VAC control circuits

and WP2-18A

the ETR503 eliminates the need for field calibration

Belimo ZG-TF2 Adaptor Kit the board may run theThe Belimo ZG TF2 Crankarm Adaptor Kit is a field proven solution for damper actuator retrofit applications where direct coupling to the damper shaft is physically obstructed or impossible. Specifically engineered for the Belimo TF series actuators, this kit enables seamless integration of TFB(X) spring return actuators into existing mechanical linkages, effectively replacing legacy foot mounted, crankarm style units from Honeywell, Johnson Controls,