Siemens Building Technology GJD221.1U Actuator 318172-701 reliable performance

reliable performance

typically securing with standard sheet metal or machine screws

Key Benefits: High-Accuracy Sensing: The 1k Ohm Platinum RTD element offers superior linearity and stability compared to standard thermistors

a wave spring

For contractors managing retrofits or emergency repairs

Siemens Building Technology GJD221.1U Actuator 318172-701 reliable performanceThe Siemens GJD221. 1U is a high performance fire smoke damper actuator designed for critical life safety applications. Engineered for 120V systems, this OpenAir model delivers 20 lb in torque to ensure reliable operation of UL listed smoke control and combination fire smoke dampers. As a veteran grade spring return actuator, it features a 2 position (on off) control signal with a rapid 30 second driving time and a 15 second fail safe spring return.