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Best dtmf decoder reviews

1. SMAKN XD-61 MT8870 DTMF decoder module telephone voice module

Feature

On-board MT8870 frequency decoder chip.
On-board audio input interface.
On-board LED lights for output state indicatio.
Main basic have lead to pin chip.
PCB Size: 26.5 * 24.5 mm.

2. HiLetgo 2pcs MT8870 DTMF Voice Decoder Decoding Module Telephone Voice Module for Arduino

Feature

MT8870 Voice decoding chip
With Voice Input interface
5 indicate LEDs, easy to know the output status
Wroking Voltage: DC 5V, Maximum current: 10mA
Maximum power consumption: 500mW

3. AD22B04 12V 4 Channel DTMF Tone Signal Decoder Relay Phone Remote Control PLC

Feature

Product model: AD22B04
Working voltage DC 12V, with reverse polarity protection
Operating Current: Standby 11-13 MA, 1 relay
Eight modes of operation: Non-locking (Momentary ), self-locking (Toggle), inter-locking(Latch), 5/20/60/120/250-second delay
The default control command is 1/2/3/4

4. Hilitand AD22A08 DC 12V 8CH DTMF Relay Phone Voice Signal Decoder Remote Controller Switch Module

Feature

MAIN FUNCTION: This is the DTMF audio controller with four channels, any phone or fixed telephone with DTMF key code remotely controls product relay open and close.
PACKAGE INCLUDE: :1 x Relay Module 1 x 3.5mm Audio Cable
SIZE: 94*62*18mm/3.7*2.44*0.7in
Standby 11-13 MA, 1 relay open 44MA, 2 relays Open 77MA, 3 relays Open 110MA, 4 relays open 140MA, 5 relays open 170MA, 6 relays open 197MA, 7 relays open 223MA, 8 relays open 247MA.
Eight modes of operation, Non-locking (Momentary ),self-locking (Toggle),inter-locking(Latch), 5/20/60/120/250-second delay.

5. Eletechsup DC 12V DTMF MT8870 Phone Voice Decoder Control Momentary Toggle Latch Delay Timer Multifunction Relay Remote Switch Module (1)

Feature

Operating Voltage: DC 9-13V(Recommendation : 12V);
Relay maximum load capacity: DC 0-48V/6A; AC 85-250V/5A
4 channel relay.DTMF audio decoder control,Dial the number 1/2/3/4 control channel 1/2/3/4.
Power anti-reverse diode.
8 kinds of Mode selection: Momentary, Toggle, Latch,Delay 5/20/60/120/250 seconds

6. AD22B04 12V Signal Decoder 4 Channel DTMF Tone Relay Phone Remote Control PLC

Feature

12VWorking voltage is DC 12V, you can easily find suitable power for this relay.
reverse polarity protection.This signal decoder relay ahs reverse polarity protection which can extend the service life.
8 modes8 modes of operation: Non-locking (Momentary ), self-locking (Toggle), inter-locking(Latch), 5/20/60/120/250-second delay.
default controlThe default control command is 1/2/3/4. Example: Dial 1 to control relay 1, dial 2 to control relay 2, dial 3 to control relay 3, dial 4 to control relay 4; control commands can be changed any 1-4 bits. (For more details, refer to "AD22B04_4 channel DTMF controller commands setting manual ").
operating currentStandby 11-13 MA, 1 relay "open" 44MA, 2 relays "Open" 77MA, 3 relays "Open" 110MA, 4 relays"open" 140MA.

7. Comimark 2Pcs MT8870 DTMF Voice Decoder Module Telephone/Audio Decoder Speech decoding Module

Feature

PCB design, VCC pin and GND pin are in the opposite position, please be caution! The VCC pin should be the GND pin , and the GND pin should be the VCC pin.
PCB size: 26.5 (mm) x24.5 (mm)
on board complex frequency decoder chip MT8870
Package Included: 2 x MT8870 DTMF Voice Decoder Module Telephone/ audio Decoder Speech decoding module
If You Are Not Satisfied with Your Purchase for Any Reason, Please Feel Free To Contact Us at the Buyer Center or Support Email, 24/7 Quick Reply

8. 16 Channels Audio Decoder Card DTMF MT8870 Audio Decoder Phone Voice Decoding Controller for Smart Home

Feature

APPLICATION -- This decoding module is used for mobile and fixed telephone voice dialing, which has decoding function.
HIGH QUALITY -- The audio decoder module is made of high quality material and can last long service life. It can work under the temperature of -40 to 85.
16 CHANNELS -- The control module has 16 channels, 8 kinds of selectable output function, and leads to STD signal to use as a microcontroller interrupt signal.
COMPACT SIZE -- This decoding controller is very small and the constructions is simple, very convenient to embed all kinds for mobile and fixed.
ADVANTAGE -- Our product has the characteristic of high stability and low power consumption. This is your best choice.

9. 4 Channel Decoder Relay, AD22B04 12V DTMF Tone Signal Decoder Relay(10A/250VAC,10A/125VAC,10A /30VDC, 10A /28VDC,10A /12VDC)

Feature

Product model: AD22B04
Working voltage DC 12V, with reverse polarity protection
Operating Current: Standby 11-13 MA, 1 relay
Eight modes of operation: Non-locking (Momentary ), self-locking (Toggle), inter-locking(Latch), 5/20/60/120/250-second delay
The default control command is 1/2/3/4

10. Tone Signal Decoder,AD22B04 DC 12V 4 Channel DTMF Tone Signal Decoder Relay Phone Remote Control PLC with Reverse Polarity Protection

Feature

Product model: AD22B04
Working voltage DC 12V, with reverse polarity protection
Operating Current: Standby 11-13 MA, 1 relay
Eight modes of operation: Non-locking (Momentary ), self-locking (Toggle), inter-locking(Latch), 5/20/60/120/250-second delay
The default control command is 1/2/3/4

Conclusion

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