The HUBBELL ALCR1277 Emergency Light Controller is a reliable and durable product designed to provide emergency lighting in various settings. With a voltage range of 100-277V and a 20 amp capacity, this controller is versatile and efficient in powering emergency lights during power outages or emergencies. The brand Current ensures quality and performance, making this product a trusted choice for ensuring safety and security in both residential and commercial settings. With three controllers available, businesses can have multiple backup systems in place for added reliability.