150 Metre RangeCode-Hopping Encryption. Power saving design engineered. Crystal controlled front-end for less frequency error shift. Easier to program via the tactile on-board 'LEARN' switch. Momentary, 1 & 3 Seconds, 1 & 3 Min Relay closure times. Latching Relay output selectable. On-board buzzer sounds on 'Activation' and in 'Learn' modes. Frequencies available are 403.55MHz. 12V or 24V AC or DC power input voltage range. Compact designed PCB for installing in small places. Master remote programming feature, used to easily program. Memory can be 'Defaulted' if remotes are lost.