Damper actuator
servo motor
GAS VALVE ADJUSTING APPARATUS
Diff. pressure switch
differential pressure sensor
Hum/Tmp.sensor room
Immersion temperature sensor
Controller
Electromotoric actuator
duct humidity sensor
DIAPHRAGM, VALVE
PHOTOCELL LIGHT BULB
immersion temperature controller
Immersion Temperature Sensor
photoelectric cell
Control thermostats
