Portable Foot Massage PacthOverview
The SM9125AF is a compact EMS foot mat massager designed for foot massage, muscle stimulation and lower-leg relaxation. It features 8 massage modes, 19 intensity levels, single-channel dual output, button control, Type-C charging and a rechargeable 110mAh battery. With a 20-minute fixed timer and load detection, it is suitable for daily foot relaxation and OEM/ODM foot care product projects.
| Attribute |
Specification |
| Product Name |
EMS Foot Mat Massager |
| Model No. |
SM9125AF |
| Application |
Feet, soles and lower-leg relaxation |
| Main Function |
Foot massage, muscle stimulation and fatigue relief |
| Channels |
Single Channel with Dual Output |
| Channel Control |
Button control with synchronized dual output |
| Modes |
8 Massage Modes |
| Intensity Levels |
19 Intensity Levels |
| Timer |
20-Minute Fixed Timer |
| Control Method |
Button Control |
| Display |
Green LED Indicator Lights with Intensity Display |
| Battery Capacity |
3.7V / 110mAh |
| Charging Port |
Type-C USB |
| Charging Time |
About 2 Hours |
| Pulse Frequency |
3–76Hz ±10% |
| Pulse Width |
200μs ±10% |
| Load Detection |
Supported, output cannot increase without load and returns to 0 when load is disconnected |
| Customization |
OEM/ODM customization available |
The RL-125A-8A1 TENS unit is a compact, circular‑body electronic pulse stimulator purpose‑built for targeted foot therapy through the use of soft conductive foot pads. With 8 massage modes, 19 intensity levels, and a single‑channel dual‑output design, this TENS unit allows you to treat both feet simultaneously—simply attach a pair of foot pads to the two 10 mm snap‑button output ports and enjoy synchronized relief across your soles. Engineered for simplicity and comfort, this TENS unit features a clear green LED ring that displays both the selected mode and current intensity, eliminating the need for a complex screen. The TENS unit is powered by a built‑in 110 mAh rechargeable lithium battery charged via a standard Type‑C USB port. With auto‑off timers and intelligent load detection, the RL-125A-8A1 TENS unit prioritises safety while delivering consistent electrical stimulation through your foot pads.
From the moment you power on the TENS unit, the outer green LED ring lights up to indicate the active mode, while the inner intensity LEDs show your chosen level. The TENS unit defaults to a 20‑minute working session and will automatically shut down if no foot pad is connected for 2 minutes, conserving battery and preventing accidental drain. The TENS unit also features a low‑battery alert (displaying “1E” on the intensity LEDs) before shutting down, so you are never caught off guard. Whether you are using the TENS unit for post‑workout recovery, daily foot relaxation, or soothing tired arches, the RL-125A-8A1 TENS unit offers a straightforward and effective solution.
Key Advantages
Dual Output for Simultaneous Foot Therapy – Unlike many single‑output units, this TENS unit provides two 10 mm snap‑button output ports on a single channel, meaning you can connect two foot pads at once and stimulate both feet at the same time. The TENS unit delivers the same waveform and intensity to both outputs, ensuring balanced therapy across your left and right soles. This TENS unit eliminates the need to treat one foot at a time, saving you time during every session.
8 Modes with 19 Intensity Levels – The TENS unit offers 8 distinct massage modes, each with its own frequency and pulse‑width pattern (ranging from 3 Hz to 76 Hz, 200 µs pulse width). From gentle tapping to deep percussive stimulation, this TENS unit allows you to cycle through modes by briefly pressing the power button. Each mode supports 19 intensity levels (0–19), giving you fine‑grained control over the sensation delivered through the foot pads. The TENS unit starts at level 0 for safety, and you can ramp up gradually using the dedicated + and – buttons.
Intuitive Green LED Ring Display – The TENS unit replaces complex digital screens with a clean, circular green LED indicator. The outer ring lights up at one of eight positions corresponding to the current mode (mode 1 through mode 8), while the inner segment shows the intensity level. This TENS unit is exceptionally easy to read at a glance, even in dim light. When no foot pad is connected, the current mode indicator flashes to alert you; once a foot pad is attached, the TENS unit resumes normal steady illumination. During charging, the TENS unit shows a cascading “water‑flow” effect across all mode LEDs, and when fully charged all mode LEDs stay lit.
20‑Minute Auto Timer for Safe Sessions – This TENS unit is designed with a built‑in 20‑minute working timer that activates as soon as you start output. The timer is non‑adjustable, encouraging you to take breaks and avoid over‑stimulation. When the 20‑minute session ends, the TENS unit automatically stops output and can be restarted with a button press. Additionally, if the TENS unit detects no foot pad load and no button actions for 2 consecutive minutes, it will auto‑power off to preserve battery life. This TENS unit gives you peace of mind during every therapy session.
Type‑C USB Rechargeable Battery – The TENS unit contains a 110 mAh 3.7 V lithium polymer battery that fully charges in approximately 2 hours via the Type‑C USB port. Unlike older TENS unit models that use disposable batteries, this TENS unit is eco‑friendly and cost‑effective. A red charging LED (or green cascade pattern, per spec) indicates charge progress; when full, the pattern changes to steady all‑mode‑on. Note that the TENS unit cannot operate while charging—this ensures safe charging behaviour. The standby current of the TENS unit is less than 30 µA, so it holds its charge for weeks when not in use.
Low Battery Alert and Auto Shutdown – When the TENS unit’s battery voltage drops to 3.2 V (±0.1 V), the intensity LEDs display “1E” as a warning. The TENS unit will continue operating for approximately 10 more seconds and then automatically power off. This prevents the TENS unit from suddenly dying mid‑session and reminds you to recharge before your next use.
Simple 2‑Button Control – Operating the TENS unit is refreshingly straightforward. Long‑press the power/mode button for 2 seconds to turn the TENS unit on or off. While the TENS unit is on, a short press cycles through the 8 modes; the intensity automatically resets to 0 when you switch modes, so you always start gently. The separate + and – buttons let you adjust intensity in single‑step increments. This TENS unit is designed for users of all ages who want effective foot stimulation without complicated menus.
Circular Form Factor with Customisable Stickers – The TENS unit body is round and measures just 12.5 mm thick, making it easy to hold and store. The version history notes that the TENS unit can include a decorative sticker on the front, allowing for brand customisation or aesthetic personalisation. The TENS unit’s 10 mm snap‑button outputs are compatible with most standard foot pads on the market.
Specifications
Parameter Value
Model RL-125A-8A1 TENS Unit (Circular)
Channels / Outputs 1 channel, 2 output ports (10 mm snap buttons)
Modes 8
Intensity Levels 0–19 (19 levels)
Pulse Frequency 3 Hz – 76 Hz (±10%, varies by mode)
Pulse Width 200 µs (±10%, varies by mode)
Output Waveform Biphasic rectangular pulse
Battery 110 mAh, 3.7 V rechargeable Li‑polymer (no protection board; requires activation on first charge)
Charging Interface Type‑C USB (DC 5 V, max 0.14 A)
Charging Time ~2 hours (low to full)
Operation While Charging Not allowed (TENS unit must be off)
Standby Current ＜30 µA
Working Timer Fixed 20 minutes per session (non‑adjustable)
No‑Load Auto Off 2 minutes of no foot pad load and no button action
Low Battery Warning Intensity LEDs display “1E” at ≤3.2 V; auto shutdown after ~10 s
Indicators Green LED ring (outer: mode; inner: intensity); charging cascade animation
Body Thickness 12.5 mm
Certifications Designed to be adaptable for certification (mode count can be reduced to 6 via PCB modification)
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