can you get battery back up for chexit device

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Some transformers in the power supplies provide a little humming noise and that is normal. If the humming in Von Duprin PS873 power supply is loud follow these steps. Remove the load from the outp...
To get a dry contact signal from a Chexit device to monitor the alarm, use the blue and brown wires (do not connect the blue to the red)  of the harness connector cable tha...
Attached table provides how long the battery back up will last with a PS914 power supply. Load (Amp DC) Battery backup time Comments 0.3 Amp 20 hours Continuous load ...
Using the key from the pull side of the door does not retract the latch bolt on a rim or vertical rod chexit device.
CX98/9975 mortise devices will retract the latch bolt when the key is used on the pull side of the door.
The Von Duprin PS914-2RS retracts the EL or QEL device approximately 200 times with five second hold time after each pull.