GCA161.1PSpring Return, 160 lb-in, 24Vac/dc, 0-10Vdc Control, 90s Run, Feedback, Plenum
GCA Series Electric Damper Actuator, rotary, spring return, 160 lb-in (18 Nm), 24 Vac/dc, 0 to 10 Vdc control, 90 sec run time, dual auxiliary switches, plenum rated

Reference part ( Belimo AF24-SR)