BioStim SD - Digital TENS Unit

SKU: OC-3196

109.0000 $109.00
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*Not available due to manufacturer back order*

The BioStim SD is a compact, extremely durable and portable unit measuring 3.9″ x 2.5″ x 1.1 in and weighs only 3.25 oz. The unit outputs an asymmetrical biphasic square waveform and includes adjustable pulse width (10-250US) and frequency settings (1-200Hz). The device can be turned up to 98mA to accommodate even the most high-demand patients. The device has large, easy to press buttons (most measure (3/4) inch) and there are no small dials to turn, enabling ease of use by patients with dexterity issues.

The lead wires are durable and easy to handle and install. The device closes, covering all of the controls to prevent any accidental changes during use for added safety. The large 1.5″ x 1.75″ display is easy to read. The belt clip is made of a durable polymer plastic and can be easily removed and replaced by the patient if necessary. The device automatically detects when the batteries are running low and a battery indicator light on the screen flashes, notifying the patient that the batteries should be changed or charged.

The device has four programmable functions; Continuous, Cycled Burst, SD1, and SD2. When the device is turned off, it stores the last setting used by the patient, when the unit is turned back on, it displays the last settings for ease of use. The clinician can lock the device in place to ensure the settings are retained for the patient should the patient have trouble setting the device made possible by the “Patient Lock System” that, when activated prevents the patient from changing any of the set parameters. When the Patient Lock Systems is turned off, a “Patient Compliance Meter” is displayed showing how many hours the device was used. A timer allows the patient to use the device for a specified period of time.

The device comes with lead wires; four 2″ x 2″ self-adhesive reusable electrodes; two AA Alkaline batteries and carrying case.


Channels: 2

Electrodes/leads: 4

Waveforms: Asymmetrical, biphasic square-wave

Output: Constant current

Intensity Continuously adjustable from 0 - 98 mA peak

Frequency 1 - 200 Hz (Hertz or pps)

Impulse Width 10 - 250 microseconds (μs) adjustable

Continuous Continuous stimulation

Strength Increase of set Pulse Width 40%, decrease of set

Duration1 Pulse Rate 45% and decrease of Amplitude 10% over a 3 second period. Values return to original settings over the next 3 second period.

Strength Increase of set Pulse Width 60%, decrease of set

Duration 2 Pulse Rate 90% and decrease of set Amplitude 13% over a 6 second period. Values return to original setting over the next 6 seconds.

Cycled Burst 2.5 seconds on, 2.5 seconds off.

Adjustable Pulse Rate 1-200 Hz.

Adjustable Pulse Width from 10-250 µs.

Power Supply 2 AA Batteries, E-block, type 6F22

Dimensions 3.9" x 2.5" x 1.1 (100 mm x 65 mm x 17 mm)

Weight 3.25 oz (92 g)

MDALL 1757


Amplitude mA 1-98
Battery 2 AA
Burst Programmable Yes
Burst Programmed Yes
Compliance Monitor Yes
Constant Yes
Customize / Programs Yes
Display Digital / Numérique
Independent Channels 2
Low Battery Indicator Yes
MDALL 1757
Modes 4
Pre-Programs Yes
Program Lock Yes
Pulse Rates 1-200
Pulse width ОјS 10-250
Rate Modulation Yes
SD Curve Yes
Timer Yes
Warranty 5 yr
Width Modulation Yes
Width + Rate Modulation Yes

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