The Inovonics door/window transmitter with reed switch includes a built-in, side mounted magnetic reed switch, with a magnet that supports a 5/8" (15mm) gap.
The door/window transmitter with reed switch is available in two configurations. Use part number EE1210W for 868-870 Mhz Europe; use part number EN1210W for 902-928 Mhz North America, 915-928 Mhz Australia, and 922-928 Mhz New Zealand.