Door contact monitoring
- Other applications
- Monitoring doors/door contacts at remote buildings (dock sheds) to detect unauthorised opening
- Standard door contacts were connected to the measuring circuit of the monitoring relay in series.
When the door is opened, the contact is opened, the resistance of the measuring circuits becomes infinite, and the output relay of the E3TF01 triggers a siren with a lamp.
- - Low-cost technical solution to protect remote buildings against unauthorised entry
- Long sensor cables and galvanic isolation of the measurement circuit and supply circuit
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