(120Vac, & 240Vac) Fail-Secure. LMA-1150S-LV operates on 12VDC, 24VDC, and 24VAC LMA-1150S-HV operates on 120VAC and 240VAC. The optimum sensitivity setting should provide a reading of “5”. The detector will not drop a Call state if power is lost for a minimum of 4 seconds or less.
eBay