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Erostek MK-312BT / ET-312BT TENS Estim Device Power Unit Audio Bluetooth 5.0
Original price was: 339,00€.319,00€Current price is: 319,00€.
Elevate your journey with the MK-312BT – Redefining Electrostimulation Excellence. The F-312BT / MK-312BT is a must-have for anyone interested in high-quality electrostimulation. Precision, versatility, and reliability – all in one device. This device is part of a long evolution that started with the legendary ET312B. If you’re curious about the full story, you can read it here. New 2026 Bluetooth Audio 5.0 Upgrade: Stream audio wirelessly from iPhone, iPad, Android smartphones, tablets, laptops and other Bluetooth-enabled devices directly to the MK-312BT. Perfect for all audio-reactive modes without requiring a physical audio cable. Optional HC-05 Serial Bluetooth Upgrade: The original HC-05 wireless serial control module remains available as an optional accessory for users who require Android-based serial communication and remote control functions.
What’s included:
– 2 × 3.5mm to 2mm output cables
– 4 × Self-adhesive Electrode Pads
– 1 × 3.5mm stereo input cable
– 1 × Power supply (AC 100–240V, DC 15V, 1000mA)
– User guide (digital form)
– 2-year warranty
Important for EU customers:
Import VAT is prepaid by us. No additional taxes, VAT or customs fees upon delivery within the European Union.
Important for US customers:
A small import duty may apply depending on the order value. Sales tax is not prepaid and may be collected at delivery.
The Erostek MK-312BT is a must-have for anyone interested in electrostimulation
The MK-312BT started as a community project to redesign the ET-312B. It was retired several years ago. Based on the PCB V1.4 and firmware f005, the Erostek MK-312BT / ET-312BT delivers outstanding performance and reliability. Thanks to its built-in rechargeable high-capacity LiFePO4 battery (2.6Ah) and integrated BMS, the device provides up to 24 hours of runtime under full load. Charging takes only 4 to 5 hours. Larger output transformers ensure smoother stimulation at higher output levels and provide ample reserves for electrostimulation. The desktop case includes a convenient handle for easy setup and eliminates visible screws on the front panel.
Bluetooth Audio 5.0 Connectivity
The MK-312BT now features integrated Bluetooth Audio 5.0 functionality, allowing direct wireless audio streaming from iPhone, iPad, Android smartphones, tablets, laptops and other Bluetooth-enabled devices. Simply pair your device and stream audio directly to the MK-312BT without requiring a physical audio cable.
Bluetooth Audio 5.0 is fully compatible with both Android and iOS devices and works seamlessly with all audio-reactive modes including SmartStim, Phaser and Stereo Audio modes. This provides a simple and convenient wireless audio solution without requiring special software or additional configuration.
Unlike traditional serial Bluetooth solutions, Bluetooth Audio 5.0 focuses on what most users actually want: simple wireless audio streaming from modern smartphones, tablets and computers. Pair your device, start your favorite audio source and enjoy completely wireless operation.
Optional HC-05 Serial Bluetooth Upgrade
For users who require wireless serial communication and remote-control functionality, the original HC-05 Serial Bluetooth module remains available as an optional accessory upgrade. The HC-05 provides Android-based serial communication and compatibility with existing software designed for serial control of the MK-312BT.
This allows customers to choose between modern Bluetooth Audio 5.0 streaming for iPhone and Android devices or the optional HC-05 Serial Bluetooth upgrade for advanced wireless serial communication and remote-control applications.
High-Quality Build for Long-Term Durability
The Erostek MK-312BT / ET312B features high-quality components designed for long-term durability. It includes three ALPS potentiometers and custom switch caps with clear markings and arrows. You can use 18 built-in routines including wave, intense, random, and 3 audio modes. Additionally, up to 6 user-defined routines can be added using the original software. The device connects easily via USB FTDI link cable. This allows you to load custom routines or remotely control the device. Full stereo audio modes enable audio-based stimulation from mono and stereo sources, including SmartStim and Phaser waveforms. Simply connect the device to a headphone output using a stereo audio cable.
Advanced Features for Maximum Customization
The microphone input allows you to incorporate ambient sound, music, or voice into stimulation using any PC-compatible microphone. The bright backlit LCD clearly displays the current mode and output levels for channels A and B, even in low-light environments. Multiple power settings provide three power ranges for finer adjustments. The MK-312BT offers a wide range of sensations with hands-free operation. The unique TriPhase output creates a third waveform between channels A and B, enabling more variation and creative electrode placement. Advanced menus allow precise fine-tuning of all parameters. The MK-312BT is a fully compatible and refined version of the legendary ET-312B.
Dimensions and Weight
Size: 200 mm × 180 mm × 68 mm
Weight: 1.6 kg
Important Information
Important for EU customers: This device falls under TARIC code 85432000 – Signal / Function Generators and is customs duty-free. We prepay the import VAT directly to the shipping company, so you pay no import VAT upon delivery. No additional costs, no surprises.
Important for US customers:
This product falls under HS code 85432000 (Signal Generators). A small import duty (usually less than 1 USD for low-value orders) may apply, and the courier might charge a minor handling fee. Sales tax is not prepaid and may be collected at delivery.
The MK-312BT started as a community project to redesign the ET-312B. It was retired several years ago. Based on the PCB V1.4 and firmware f005, the Erostek MK-312BT / ET-312BT delivers outstanding performance and reliability. Thanks to its built-in rechargeable high-capacity LiFePO4 battery (2.6Ah) and integrated BMS, the device provides up to 24 hours of runtime under full load. Charging takes only 4 to 5 hours. Larger output transformers ensure smoother stimulation at higher output levels and provide ample reserves for electrostimulation. The desktop case includes a convenient handle for easy setup and eliminates visible screws on the front panel.
Bluetooth Audio 5.0 Connectivity
The MK-312BT now features integrated Bluetooth Audio 5.0 functionality, allowing direct wireless audio streaming from iPhone, iPad, Android smartphones, tablets, laptops and other Bluetooth-enabled devices. Simply pair your device and stream audio directly to the MK-312BT without requiring a physical audio cable.
Bluetooth Audio 5.0 is fully compatible with both Android and iOS devices and works seamlessly with all audio-reactive modes including SmartStim, Phaser and Stereo Audio modes. This provides a simple and convenient wireless audio solution without requiring special software or additional configuration.
Unlike traditional serial Bluetooth solutions, Bluetooth Audio 5.0 focuses on what most users actually want: simple wireless audio streaming from modern smartphones, tablets and computers. Pair your device, start your favorite audio source and enjoy completely wireless operation.
Optional HC-05 Serial Bluetooth Upgrade
For users who require wireless serial communication and remote-control functionality, the original HC-05 Serial Bluetooth module remains available as an optional accessory upgrade. The HC-05 provides Android-based serial communication and compatibility with existing software designed for serial control of the MK-312BT.
This allows customers to choose between modern Bluetooth Audio 5.0 streaming for iPhone and Android devices or the optional HC-05 Serial Bluetooth upgrade for advanced wireless serial communication and remote-control applications.
High-Quality Build for Long-Term Durability
The Erostek MK-312BT / ET312B features high-quality components designed for long-term durability. It includes three ALPS potentiometers and custom switch caps with clear markings and arrows. You can use 18 built-in routines including wave, intense, random, and 3 audio modes. Additionally, up to 6 user-defined routines can be added using the original software. The device connects easily via USB FTDI link cable. This allows you to load custom routines or remotely control the device. Full stereo audio modes enable audio-based stimulation from mono and stereo sources, including SmartStim and Phaser waveforms. Simply connect the device to a headphone output using a stereo audio cable.
Advanced Features for Maximum Customization
The microphone input allows you to incorporate ambient sound, music, or voice into stimulation using any PC-compatible microphone. The bright backlit LCD clearly displays the current mode and output levels for channels A and B, even in low-light environments. Multiple power settings provide three power ranges for finer adjustments. The MK-312BT offers a wide range of sensations with hands-free operation. The unique TriPhase output creates a third waveform between channels A and B, enabling more variation and creative electrode placement. Advanced menus allow precise fine-tuning of all parameters. The MK-312BT is a fully compatible and refined version of the legendary ET-312B.
Dimensions and Weight
Size: 200 mm × 180 mm × 68 mm
Weight: 1.6 kg
Important Information
Important for EU customers: This device falls under TARIC code 85432000 – Signal / Function Generators and is customs duty-free. We prepay the import VAT directly to the shipping company, so you pay no import VAT upon delivery. No additional costs, no surprises.
Important for US customers:
This product falls under HS code 85432000 (Signal Generators). A small import duty (usually less than 1 USD for low-value orders) may apply, and the courier might charge a minor handling fee. Sales tax is not prepaid and may be collected at delivery.
| Weight | 1,6 kg |
|---|---|
| Dimensions | 20 × 18 × 6,8 cm |
3 reviews for Erostek MK-312BT / ET-312BT TENS Estim Device Power Unit Audio Bluetooth 5.0
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Leo (verified owner) –
Really happy with the new MK-312BT Bluetooth version. The connection works perfectly and the stimulation feels smoother and stronger than with my old Erostek ET312.
Battery lasts several days, build quality is solid, and shipping was fast — around 10 days with no extra fees.
Totally worth it for the price.
Markus (verified owner) –
Absolute purchase recommendation.
I have already tried several devices before, but this is truly a top-quality device.
I use it very often, and the battery level is still at 99%.
What I really like are the 3 audio settings.
Unlimited possibilities, Estim files, music and much more.
Another big advantage is the contact for questions and suggestions.
You receive a quick response there.
The shipping time is also perfectly acceptable, you know where the device comes from, and there is a tracking number so you always stay informed.
One negative point from my perspective is that I discovered the website too late, otherwise I could have saved some Euros.
So 👍
Michael (verified owner) –
Hi Stefan,
Well your products are pretty amazing for the price I payed,
And you responded so quickly to questions I needed to ask,
I’m absolutely amazed to be honest,
I will give you 5 stars for a 100% company,
Well done and thank you.
Michael, UK