GEM-RTRANS Recessed Wireless Window/Door Transmitter

"The Same Gemini crystal-control range and reliablility performance proven superior in independent tests!"

• Powerful wireless transmitter
• White housing, magnet and hole cover
• Long-Life 3V Type DL123A lithium battery, supplied. (Field-replaceable 5-year battery).

Even faced with metal door frames and/or metallic-sided insulation, this product features GEMINI crystal-control and omnidirectional tank circuitry alignment specifically designed to avoid obstructions for maximum signal "punch thru" and reliability.