The GFE-MCPE-C is designed to comply with EN54-11 compatible with all GFE conventional control panels. A bi-colour LED flashes Green when the unit is connected to a control panel and is illuminated Red when in Alarm. MCP from GENT are all with a 470- Ohm resistor and Normally open contact, complete with glass. Weather proof IP67. Semi-flush or surface mounting, Fully compliant with EN54, Part11, Resettable operating element option. Resistive and clean contact connections.