3pcs 16 Channel DTMF MT8870 Audio Decoder Board Phone Voice Decoding Controller for Smart Home Automation

Specifications DC Power Supply Voltage 4 5V 5 5VOperating Temperature 40 85 °C IO Drive Sink Current Low level drive 20mA source current High level drive 270uA 16 Channel selectable high and low level output 8 kinds of Mode selectionPCB Size 50 x 20 mm Overview This decoding module is for fixed telephone voice dialing decoding function has 16 channels 8 kinds of selectable output function and leads to STD signal to use as a microcontroller interrupt signal very convenient to embed all kinds for fixed telephoneremote remote control remote control decoding key value 12 channels outputs decode fixed telephone keys 0 9 Another 4 channels output ABCD can use DTMF Dial Software control Package Included 3 x 16 Channel DTMF Decoder Module3 x Male to Male Audio Cable 3 5mm jack