Product Overview A standard SignWave Static with a Plug Top Power Supply Unit - without the Vibrating Pillow Pad. The Static Signwave Receivers- offer various options as a fixed version of the standard portable signwave. They are Ideal as a fixed receiver where the portable version may not be required and is needed to ensure the signal is always received in a particular room. This version of the Signwave Receiver is designed as static unit which is plugged into a mains power source. Item dimensions (including base) 11.6 x 15.0 x 11.6 (cm)Item weight 305(g) Features Easy to use cancel button Wireless Range up to 1000m in open air Different sound & light pattern for each event *New for 2016* Dual frequency (5KHz & 520Hz) smoke alert.This makes the alarm accessible for people withlow & high frequency hearing loss LED backlit event display Fire Safe Compatible User adjustable alarm level (up to 90dB) Optional pillow pad for overnight cover