USB relay module with potential-free changeover contact in surface-mounted housing. Power supply: 5V DC, input signal: 5V DC, min. 5mA. Relay switchable NO/NC. Relay switching capacity: 30V DC, max. 10A. Incl. 1.4m connection cable with USB plug for control. Can be connected to the Smart Siren SW360F as a relay output. Housing dimensions: 108 x 56 x 30mm.