- transmitter & receiver :Radio freq 315 MHz (USA,Asia), - 433.92MHz(Europe) - Laser module wavelenght:650nm (class II) - Interface receiver USB HID spec.Vert1.1 ver 2.0 - Suported OS Win 98,SE, ME,2000,XP - Battery transmitter Alkaline 12V (gp A23), - Receiver USB Bus-powered - Operating current transmitter15mA, receiver 10-12mA - Dimension transmitter 115mm (L) x 18mm(H) x 19mm(W) - Dimension receiver 96mm(L) x 11mm(H) x 23mm(W) - Weight transmitter 20g , receiver 15g - Enclosure Molded Plastic