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AS3153KT - DTMF Decoder and Display

Ability Level 3: IntermediateProduct Formats Available: Pre-Assembled Module (AS) or
Self-Assembly Electronic Kit ( Soldering Required)

Detect DTMF tones from tape recorders, receivers, two-way radios, etc using the built-in microphone or direct from the phone line (via the onboard line isolation transformer).

The numbers are displayed on a 16 character, single line display as they are received.

Up to 32 numbers can be displayed by scrolling the display left and right. There is also a Serial Output for connection to a PC. All data written to the LCD is also sent to the serial output, including the RESET and READY messages. Data is sent as standard ASCII characters.

The unit will not detect numbers dialled using pulse dialling. Circuit uses a CM8870 DTMF receiver chip and pre-programmed microcontroller. This product is NOT a caller ID unit!

Specifications
Supply9-12Vdc Regulated (Order Code 660.446UK)
Current consumption<20mA @12Vdc
Display16x1 LCD
InputPhone line or built-in microphone
PC Serial OutputStandard ASCII characters (9600 8N1)
Dimensions~55 x 95 x 35 mm
Board ConnectionsPower: 5.5 x 2.5mm DC socket
Line-in & PC Serial output: solder pads
Product FormatsSELF-ASSEMBLY Electronic Kit (KT) or
PRE-ASSEMBLED Electronic Module (AS) Product Formats Info
DocumentationUser Manual
  • This product does not have BT approval
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