Features : One high-sensitivity reed switch (magnet included) * Wireless range in a typical residential environment *- 20m (65ft) with MG6160 and MG6130; *- 40m (130ft) with MG5000,MG5050 and RTX3 * Available in 433MHz or 868MHz * Anti-tamper switch * Dimension;4.4cm x 3.0cm x 1.7cm (1.7in x 1.2in x 0.7in) Availability:  Pre-Order  Model: PA3708  Manufacturer: PARADOX