Route the cable from the control panel through the backplate. Secure the backplate using at least three No. 10 fixing screws. Commissioning: Apply 12V power (H+ and H-). Connect the battery leads (Red to BT+ , Black to BT- ).
Connect the ENG terminal to a switched output on your panel to allow quiet maintenance without triggering the siren when opening the cover. elmdene 7422-sfg-g3f manual
Listen for "audible tamper" clicks: a single click indicates a tamper closing; continuous slow clicks suggest the rear tamper is not fully closed. Route the cable from the control panel through the backplate
Engineer mode input; when held high, it silences the unit for maintenance. Output to indicate a battery or piezo failure. REM TST Input for remote testing via the control panel. Key Wiring Notes: Commissioning: Apply 12V power (H+ and H-)
Operates on 12V DC with a 6V 300mAh NiMh backup battery for full Self-Activating Bell (SAB) capability.
The Elmdene 7422-SFG-G3F is a high-specification Grade 3 external siren module often used in professional alarm installations, including those by ADT. This guide provides a comprehensive overview of its features, installation procedures, and wiring based on technical documentation for the Elmdene 7422 and Grade 3 sounder ranges.