Inovonics Wireless Door / Window EOL TransmitterThe Inovonics EN1215WEOL door window with wall tamper and EOL has a built in magnetic reed switch on the side, with a magnet that supports a 5 8 gap. A 2. 2K ohm end of line resistor is included with the transmitter, and is required to operate it. The transmitter is fully supervised and includes a wall tamper switch that notifies the system when the transmitter is removed from its mounted surface. Key Features End of line resistor supervision Screw