• The A50E-2 is a single-pole, voltage-free, addressable relay providing changeover contacts. The unit is designed to be installed within the equipment to be switched, saving installation costs compared to a long, auxiliary circuit, cabling ends at the control panel. Compliant with EN54 Part 18, the relay can be placed anywhere in the two-core ZP loop and is designed for switching on or off building services such as air conditioning plant in fire conditions. The unit is ideal for controlling relevant system equipment such as door opening circuits or for emergency shut-down of high-risk services such as gas or oil supply valves in boiler rooms. Addressable interface unit complies with EN54 Part18 Low profile DIN rail mounted Loop wired - next to the equipment to be switched Operated from any combination of input addresses Voltage-free, replace contacts

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