Paradox RTX3-Z3J 2-Way Wireless Expansion Module (433 MHz)

The Paradox RTX3-Z3J is a 2-way wireless expansion module designed to enable wireless device compatibility for hardwired Paradox security systems. Connecting directly to the 4-wire combus line of Paradox Spectra SP, Digiplex EVO, and Imperial control panels, the RTX3 allows hardwired panels to support up to 32 wireless protection zones, 32 wireless remote controls (REM series), and 8 wireless PGMs (PGM82 / 2PGM).

Operating over a stable 433 MHz RF transceiver frequency, the RTX3-Z3J provides 2-way communication and active supervision for wireless PIR sensors, door contacts, smoke detectors, sirens (SR250), and keypads (K32RF / K37). The "Z3J" variant features onboard diagnostic LEDs, low-battery and signal strength supervision, dual anti-tamper switches (cover removal and wall detachment), and 2 onboard PGM outputs for local relay control.

Key System Features & Functionality

• 32-Zone Wireless Expansion: Adds 2-way wireless capacity for up to 32 protection zones on hardwired Spectra SP, Digiplex EVO, and Imperial panels.

• 2-Way Supervised Communication: Maintains active signal supervision, battery monitoring, and RF link health with all paired wireless devices over 433 MHz.

• Supports Up to 32 Wireless Remotes: Pairs up to 32 REM1, REM2, REM3, or REM15 remote control keyfobs for arming, disarming, and PGM activation.

• 2 Onboard PGM Outputs: Features 2 programmable outputs (PGM1 and PGM2) directly on the expansion module for localized control triggers.

• Wireless Siren & Keypad Compatibility: Enables full 2-way integration for wireless outdoor sirens (SR250) and wireless keypads (K32RF / K37).

• Dual Anti-Tamper Protection: Built-in tamper switches alert the main control panel if the module cover is opened or if it is detached from the mounting surface.

Key Technical Specifications