Use one 433 MHz transmitter for a magnetic contact or garage-door tilt zone plus two normally closed external-contact zones, each with its own serial number.
Gain flexible indoor opening protection from a compact two-zone 345 MHz transmitter with dual magnet orientations, a closed-circuit wired input, and CR123A battery.
Protect indoor openings with extra alignment tolerance using a wide-gap 345 MHz contact, separate closed-circuit input, two programmable loops, and CR123A battery.
Match darker doors and trim with a brown two-zone 345 MHz transmitter featuring a magnetic contact, closed-circuit input, mounting hardware, and CR123A battery.
Add two-zone opening flexibility with a white 345 MHz transmitter combining a built-in reed switch, closed-circuit input, included mounting hardware, and CR123A battery.
Organize a larger wired takeover with a 16-by-14-inch enclosure, 15 security inputs, two-wire smoke support, 500mA output, and room for a second module.