Brand ProduinoModel XL-DM01Quantity 1 PieceColor Army GreenMaterial PCBEnglish Manual / Spec YesOther Features Operating voltage: Transmitter 3.6~5V (recommended 5V); Receiver 3.6~5V (recommended 5V); Current: transmitter: Max. 110mA; Receiver: Max. 40mA; Frequency Response: Transmitter 20~20KHz; Receiver 20~20KHz; Ambient temperature: transmitter -15C~60C; Receivers -15C~60C; Sampling rate: transmitter 44.1K; receivers 44.1K; SNR: transmitter 95dBC; receivers 95dBC; TDH: Transmitter <1%; Receiver <1%; Frequency range: Transmitter 2400~2480MHz; Receiver 2400~2480MHz; Channel spacing: transmitter 5MHz; receiver: 5MHz; Modulation: transmitter GFSK; receivers GFSK; Baud Rate: T transmitter 2MBps; receivers 2MBps; Frequency stability: Transmitter+ /-80KHz; Receivers +/- 80KHz; Channel selection: a one-way loop transmitter button; receivers automatically search and select; Working Channel: 16 Transmitter; receiver 16Packing List 2 x Module<img src="http://112.74.112.28/down/products/280433/280433_000.jpg" noproxy>