Securitron Securitron Exit Devices, Dorma, Mfr#: WSRFT1 433 SQ4

Tamper Resistant Wall Switch, 4-1/2 in. x 4-1/2 in. Plate, Normally Open, 433 MHz Wireless Radio Frequency Transmitter, ADA Symbol and in.Press to Open in., Blue Letters on Stainless Steel