Excellent solenoid valve with Japan know how tech.
No water hammer voice.

Operating Voltage : 110-120 Vac, 50/60Hz, 1.3-1.6 KW
: 220-240 Vac, 50/60Hz, 1.3-1.6 KW
Circuit Operation: Infrared Automatic, self adjusting
Sensor Range: 51 mm to 330 mm [2" to 13"], adjustable; standard 180 mm +/- 20 mm [7"]
Motor Thermal Protection: Auto Resetting Thermostat turns unit off at 105 degree C {221 degree F}
Motor Overload Protection: Motor Assembly Designed with over current fuse, replaceable
Heater Thermal Protection- Auto Resetting Thermostat turns unit off at 85 degree C (185 degree F); Thermal cut-off 142 degree C (288 degree F)