The Von Duprin PS914-2RS retracts the EL device approximately 200 times with five second hold time after each pull.
A longer or shorter hold time would change this calculation.
The QEL device has a lower inrush and lower holding power requirement so it should exceed the EL device cycles on battery power.
The Battery Backup feature uses two rechargeable lead acid 12V, 7 Amp Hour batteries
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