Optex TC-10U Battery-Powered Door/Window Contact and Wireless Transmitter for RCTD-20U

Secure larger entry points quickly with the Optex TC-10U battery-powered door/window contact and wireless transmitter — a simple way to add reliable perimeter monitoring to existing Optex wireless systems. This magnetic contact transmitter fits in the backbox of OPTEX battery-operated detectors to extend detection range and deliver instant wireless alerts to RCTD-20U/RC-20U announcers for improved site awareness. Built for both indoor and outdoor use, the TC-10U uses wireless connectivity and over 8 million code combinations to minimize neighbor interference and reduce nuisance alarms, helping teams focus on genuine security events. At a compact 3.1" x 1.8" x 1" wall-mount package, it installs quickly with hybrid mounting options and includes a low-battery signal to keep maintenance predictable. Ideal for commercial, retail, and light industrial environments, the TC-10U bolsters surveillance and access-point protection without complicated wiring. Add dependable, low-voltage magnetic contact protection to your security toolkit — order the Optex TC-10U today to strengthen monitoring and improve response across doors and windows.

• Extend coverage and reduce false alarms: mounts in the backbox of OPTEX wireless detectors to expand door/window monitoring without extra wiring
• Reliable wireless signaling: battery-powered transmitter with 8M+ code combinations to prevent interference and maintain secure notifications
• Easy installation and versatile mounting: compact wall-mount form factor (3.1" x 1.8" x 1") for indoor/outdoor use and hybrid installation
• Low-maintenance operation: low-battery alert for predictable service intervals and uninterrupted security monitoring
• Seamless system integration: designed to work with Optex RCTD-20U/RC-20U announcers for instant chime or alarm notification