The sensor is optimized to detect flaming fires
The damper has been redesigned for superior noise reduction
An integrated light sensor automatically turns the bulb on at night and off during the day
-2000W Voltage: 240
PEX Stick Pipe, Hot Water, Red, 3/4-In. Rigid Copper Tube Size x 20-Ft. Gardner Bender The sensor is optimized to3 4" rigid copper tube size x 20', red, pex stick, for hot water, use with 3 4" quick connect & brass pex insert fittings, w type b burst pex pipe rated 1100 psi at 73 degree fahrenheit, 375 psi at 180 degree fahrenheit, type b silane method pex has more anti oxidants & thermal stabilizers which is critical for chlorine ratings & recirculation systems, type a,b,c are european system designations not rating grading system for pex, do not use duct tape,