System Sensor RTS151KEY Remote Test Station Fire Alarm

System Sensor RTS151KEY remote test station is a dedicated accessory for duct smoke detection and fire alarm systems, enabling maintenance teams to test and reset duct smoke detectors remotely from an accessible location. Designed for HVAC and building protection applications, it works with System Sensor duct detectors and supports both 2-wire and 4-wire configurations. Activation is via a key-operated switch, with a multi-colored LED status indicator that shows the unit’s state. Mount it in a single-gang electrical box and note the white housing; its dimensions are 4.6 in × 2.75 in × 1.8 in. In addition to remote test and reset, it provides remote detector reset capability and remote alarm test capability, making routine verification safer and more efficient. Common replacements include System Sensor RTS151, RTS451KEY, and RTS2-AOS.