Addressable Door Retainer

• The ADR takes a normal loop address and draw a trickle charge of 3.7mA max.
• They are seen on the system as an O unit and hold 200Nm.
• The ADR uses a patented permanent magnet mechanism that allows the protocol to switch the device between a door held and door released state.
• This permanent magnet mechanism means that the ADR requires no power from the fire alarm system to maintain the non-fire (door held state.
• The ADR does include a built in EN54-17 approved short-circuit isolator and EN54-18 approved input/output functionality that draws a constant current from the loop to support protocol communications.

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