The B-5243A is UL listed for fire alarm, burglar alarm, access control applications and hospital signaling nurse call equipment. 4 amps continuous supply current at 12Vdc (switch closed), 3 amps continuous supply current at 24Vdc (switch open). Slotted keyholes make it suitable for vertical wall or rack mounting. Unit comes complete with power supply, enclosure, cam locks, battery leads and (2) 12 Volt batteries.