Honeywell Home Thermostat, NC Zone Valve & 24V Systems, Heat Only, °C

Honeywell Home Hydronic Normally/Closed Zone Valves Thermostat Mercury Free.
Also works on 24V Conventional Heat Only Systems Mercury Free.
Application Heat Only
Dimensions (in.) 4 3/4 in. high x 2 7/8 in. wide x 1 3/8 in. deep
Dimensions (mm) 121 mm high x 73 mm wide x 35 mm deep
Mounting Vertical
Electrical Ratings 20 to 30 Vac
Stages 1 Heat
Supply Voltage 20 to 30 Vac
Sensor Element Bimetal
Color Premier White®
Switching Action SPST Switch Type Precision Snap ActionTerminal Designations R, W
Setting Temperature Range (C) 7 to 32