Cebek DTMF-1 is a Dual-Tone Multi-Frequency (DTMF) tone generator and transmitter module that allows you to play audible telephone tones using the keyboard supplied. You can generate control sequences on DTMF remote receivers consecutively and play the tone corresponding to the pressed number.
It can memorise a maximum of 10 digits and then play them using an automatic operating mode. The output is supplied in low frequency mode (adjustable between 0.1 and 1V), allowing the tones to be injected into microphone or line input.
Tones are output for the duration of the button press. If two buttons are pressed at the same time, only the first one pressed is output. DTMF output level is adjustable using an onboard trimmer.
It is specially designed to transmit the code through the telephone network or by radio-amateur. The remote DTMF key with a control on a maximum of 8 outputs using DTMF-2 or DTMF-3 modules. It is supplied with the keyboard and indicator LEDs.
Specifications| Operating Voltage | 12V or 24V dc |
| Current Consumption | 20 - 50 mA |
| Suitable Power Supply | CFE103 |
| DTMF Output Tones | 0 - 9, * and # |
| DTMF DC Output | 0.4 - 0.8Vdc (adjustable) |
| DTMF Output Impedance | 5K Ohm |
| Memory Capacity / Password | 1 - 10 tones |
| Memory Life | 100,000 cycles |
| Board Connections | Screw terminal blocks |
| Dimensions (WxDxH) | Board: ~ 72 x 54 x 20 mm Keyboard: ~ 64 x 51 mm |
| Connection Cable | ~ 190mm long |
| Weight | 53g |
| Product Format | PRE-ASSEMBLED Electronic Module Product Format Info |
