KD-2B Type Transcutaneous Electrical Nerve Stimulator

1 Overview
1.1 The KD-2B Type Transcutaneous Electrical Nerve Stimulator is a low-frequency electrotherapy device with two channels of output. The device applies bidirectional asymmetric low-frequency pulse currents to the human body through skin electrodes (or via electro-acupuncture at acupoints) to treat acute and chronic pain. This method is known as Transcutaneous Electrical Nerve Stimulation (TENS) therapy.

1.2 Device Functions:

a) Use built-in presets to select parameters such as frequency, pulse width, treatment mode, and timer duration. There are 0-50 built-in presets available for selection. Selecting a preset chooses a set of parameters that can be directly applied or modified before use. Modified parameters are automatically saved within that preset for future use.

b) The output offers 10 treatment modes  M=M0-M9

1) Continuous wave M0: -/- , ;

2) Dense-sparse wave M1: F-F/2 , where: F is the frequency value  ;

3) Intermittent wave M2-M9 (see Table 1), where: s stands for seconds  ;

c) Multiple combinations of pulse width and pulse frequency are available. Each channel operates independently and can be adjusted continuously, either synchronously or asynchronously;

d) All operational information is displayed on the LCD screen;

1.3 Device Components:

a) Consists of the main unit, output cables, and electrodes;

b) Output cables include electro-acupuncture wires and electrode wires. Electrodes include round and square types. Optional accessories include adhesive electrodes, small round electrodes, and small conical electrodes;

c) Electrodes:

① Conductive rubber electrodes: Square 40mm×80mm, Round Φ40mm, Small Round Φ20mm,     Small Conical Electrode 40mm×12mm. All tolerances are ±20%;

1.4 Operating Conditions:

a) Ambient temperature: 5℃～40℃;

b) Relative humidity: ≤80%;

c) Atmospheric pressure: 86KPa～106KPa.

1.5 Power Supply Conditions:

a) Power supply: AC 220V;

b) Power frequency: 50Hz;

c) Input power: 25VA.

1.6 Device Dimensions and Weight:

a) Dimensions: 300mm×260mm×120mm;

b) Weight: Approximately 5kg.

2 Scope of Application

This device applies specific low-frequency pulses to the human body to treat acute and chronic pain. It can also be used for electro-acupuncture and electro-massage.

3 Main Technical Specifications

3.1 Output waveform: Non-polar bidirectional asymmetric pulse.

3.2 Output pulse width: Continuously adjustable from 20μS to 500μS, tolerance ±20%.

3.3 Output pulse frequency: Continuously adjustable from 2Hz to 160Hz, tolerance ±10%.

3.4 Output current: Each channel operates independently. With a 1kΩ load resistance, the peak output current Ip per channel is continuously adjustable from 0mA to 99mA. Maximum output tolerance ±30%.

3.5 Timer setting: Continuously adjustable from 5 minutes to 9 hours 55 minutes, in 5-minute increments. Allowable deviation ±10%.

3.6 Continuous operation time: Not less than 4 hours.