These have a lock tongue in the plunger and use the same basic solenoids that are within the shell. Normally, the lock is engaged, making it impossible to open the door due to the lock tongue of the solenoid being in position. In this condition, it doesn't require any electricity. The lock tongue calls in when DC is applied, making the door openable..
| Voltage | 12 / 16 /24 V D C |
| Stroke Range | 5mm & 10mm |
