Hemal Electronics
Grant Road, Mumbai, Maharashtra
GST No. 27AGVPG2952Q1ZI
Call 08048981260 94% Response Rate
GSM and GPRS GPS Modules
Our range of products include 4 in 1 array ir line sensor and mt8870 dtmf decoder module.
4 in 1 Array IR Line Sensor
Rs 175 / PieceGet Best Price
| Brand | CHINA |
| Operating Voltage | 3.3V-5V |
| Weight | 4g |
| Single package size | 5 x 3 x 1 cm |
| Packaging Type | Box |
| Detection distance | 2 cm-450 cm |
- Detection range: 1mm to 60 CM adjustable, the closer the performance more stable, white reflects the farthest distance.
- Size: in the control panel:42 x 38 x 12mm (length x width x height).
- Small forward: 25 x 12 x 12mm (length x width x height).
- Output interface: 6 wire interface (1234 to 4 signal output ends, + positive power, for the negative power is ground)
- The output signal: TTL level (can be directly connected to I/0 microcontroller, infrared light reflected back to the sensor induction, the red indicator light, output low level; no infrared light, the indicator light does not shine, the output high.)
Package Includes:
1 x Tracking Module (Hollow Board + Small Plate Forward).
12 X Male to Male Dupont Lines (20 cm long).
Specifications :-
| Working voltage (V) |
3.3 ~ 5 |
| Working current (A) |
Above 1A |
| Operating Temperature () |
-10 ~ +50 |
| Mounting hole |
M3 |
| Detection range |
1mm ~ 60 cm adjustable. |
| Shipment Weight |
0.025 kg |
| Shipment Dimensions |
10 8 2 cm |
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MT8870 DTMF Decoder Module
Rs 125 / PieceGet Best Price
Minimum Order Quantity: 10 Piece
| Part Number | MT8870 |
| Operating Temperature | 0~+85 Degree C |
| Single Package Size | 10 x 10 x 3 cm |
| Weight | 0.035 kg |
| Packaging Type | Box |
| Working Voltage | 5 V |
| Usage/Application | Arduino and Raspberry Pi |
This component is ideally suited to adding dual tone multi-frequency (DTMF) decoding to your project. This detection module interprets the incoming tone and produces a coded output that can be connected to all manner of microcontrollers.
DTMF is commonly found in touch tone devices such as a phone. The tone is a combination of two separate sine waves that produce a unique signal that can be transmitted or heard. When the module receives the signal it is able to decode it and produce a binary output that can be used in other devices. The module shows the state of the signal through onboard LEDs.
As an idea, you can connect up a mobile phone via 3.5mm to 3.5mm cable to the module. Dialling into the phone from a second mobile and then using the keypad will produce the tones on the original phone. The tones in the call can then be interpreted by the module, allowing you to control all manner of projects. The pins are suited to standard sockets with a pin pitch of 2.54mm.
The MT8870 Tone Decoder is a kind of commonly used multi-frequency decode IC product developed by the MITEL company. It is a complete DTMF receiver. After it received the DTMF signal, it will divide the signal into high-frequency group and low-frequency group and send the signal to the digital decoder which can figure out the key value then send it to the outside Bus via four lines( Q1, Q2, Q3, Q4) as the binary form.
Specifications & Features of MT8870 DTMF Decoder Module:-
- Working voltage: 5V
- Power Consumption: 500MW(MAX)r: 500 mw (MAX)
- On-board voice input interface
- On-board LED, it is very convenient to check the output state.
- Onboard 5 x LED indicators for easy viewing output state
- Operating Temperature : -40-+85 °C
- IO Drive : Current Maximum 10mA.
- PCB Size : 25.4x25.4MM
- This decoding module is for mobile and fixed telephone voice dialing decoding function
- Designed specifically for ARDUINO Board. Can also be used for other MCUs(AVR PIC MSP430 STM32 ARM7/9/10/11 FPGA/CPLD)
- Low power consumption
- Internal gain setting amplifier
- Adjustable guard time
- Central office quality
- Onboard 3.5mm input interface
- 5 Channel interface
- On-board MT8870 frequency decoder chip
- Power-down mode
- Inhibit mode
- Does not require external circuits or wiring, it can be inserted directly into the UNO/MEGA2560/DUE board to use.
- 12-Digital outputs decode mobile and fixed telephone keys (0-9, * #). Also, another 4 Digital output(ABCD) can use “DTMF Dial” for Software control.
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