Bosch DS150I Infrared Access Control Request-to-exit Sensor Bosch DS150I Infrared Access Control Request-to-exit Sensor The DS150i is a passive-infrared detector designed for request to exit (REX) applications. It is UL Listed as an access control device under the UL 294 standard and is listed for Class I for UL Canada (ULC-S319). For C-UL listed installation applications, the REX shall be connected to ULCS319 listed compatible devices (i.e. control units, power supply and locks). Intended for indoor use only. 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)