The surge protector defends your garage door openers and other devices against harmful voltage fluctuations, surges and energy spikes. LED lights indicate charging status and ground and lets you know if is working properly. An EMI/RFI filter reduces AC line noise and radio frequency interference.
Conforms to UL Std. Nos. 498A and 1449. Certified to CSA Std. C22.3, Nos. 42 and 269.3.