STEINEL TR150 Power PK Man/Auto Switch Force ON/OFF Isolated NO/NC 20Amp Relay STEINEL TR150 Power Pack Manual/Auto (ON) Switching, Force ON/OFF, Isolated NO/NC. 20 Amp. Relay. Power Pack. Manual/Auto (ON) Switching, Force ON/OFF, Isolated NO/NC. 20 Amp. Relay. The TR 150 is a full featured power pack with an isolated relay that provides power to STEINEL low voltage occupancy sensors and other control devides. They are Class 2 output power supplies, suitable for parallel interconnection. The power packs switch the load(s) ON and OFF in response to signals from the control devices. Each power pack contains a Mode Switch to select either manual ON or automatic ON operation. In manual ON mode, occupants operate a low voltage momentary switch to turn lights ON. Convenient mode switch selects either manual ON or automatic ON operation LED status indicator Built-in isolated relay for use with HVAC controls and other low voltage devices Force on and force off control inputs allow for integration with a building automation system for time of day control or load shed applications. Switching is performed at, or close to, the zero-cross of the AC waveform in order to improve relay performance 1/2 inch threaded nipple and two lock nuts are used to secure to a standard 1/2? knockout Low voltage momentary switch input allows for manual control in automatic or manual mode Switching Power Supply provides up to 250mA of 24VDC to low voltage controls About Us Welcome to Help! Resale, your go-to consignment shop where value meets quality. At Help! Resale, we're dedicated to providing you with an exceptional shopping experience, whether you're looking to find the best deals or consign your gently used items. Help Resale 7200 Fair Oaks Blvd Ste 120 Carmichael CA 95608 Business Hours : Monday-Friday: 9:00 am to 5:30 pm (PST) All product and company names are trademarks TM or registered trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them. (description exceeds maximum possible length)