Key Features: Digital/analog transceiver with 3 antennae Transmitter frequency: 457kHz Maximum range: 60M (standard mode) 90M (analog mode) Dimensions: 4.5 in X 3 in X 1.1 in (113mm X 75mm X 27mm) Weight (including batteries) 7.4oz (210g) W-link frequency: 869.8MHz Battery life (minimum) 200hr Complies with EN 300718 standard. * Digital/analog transceiver with 3 antennae * Transmitter frequency: 457kHz * Maximum range: 60M (standard mode) 90M (analog mode) * Dimensions: 4.5 in X 3 in X 1.1 in (113mm X 75mm X 27mm)