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Door contact­ monitoring

Monitoring doors/door contacts at remote buildings (dock sheds) to detect unauthorised opening
Industry:
Other applications
Series/Measures
Thermistor monitoring
Product:
E3TF01 230VAC
Data sheet:
Task:
Monitoring doors/door contacts at remote buildings (dock sheds) to detect unauthorised opening
Solution
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.

Use/value:
- 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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