This unique device will deter unauthorized door openings without restricting emergency egress when used with the 6510-S35 Emergency Pull Station. Model 6510/COV/SR in addition to the sounder incorporates a SPDT alarm output for remote monitoring. The anti-tamper alarm cover consists of a clear, tamper proof, super tough polycarbonate shield and frame that fits over the 6510-S35 Emergency Pull Station. When the cover is lifted a local alarm sounds, the horn will sound until the cover is lowered back into the closed position. The 6510/COV/S and /SR covers can operate independently from a standard 9-volt battery or may be powered remotely with 12/24 VDC. The 6510/COV/SR comes with remote wiring capability. The 6510/COV/SR with piezo sounder includes a relay with SPDT contacts which is energized whenever the cover sounder is activated. This output can be used to alert other remote systems.