Operate your lighting with a handclap. Ideal for disabled or elderly people. '1-clap' or '2-clap'-mode selection. '2-clap'-mode features built-in safety turn-off timer (5h approx. )Output relay 'pulse' or 'toggle' selection. Microprocessor controlled. Output relay with led-indicator. Relay power rating: 24VDC/AC 3A. Requires 12VDC / 150mA. With DC adapter socket. 3.1 in. x 2.9 in. x.9 in..