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List of ways Capacitive Switch Tester Assists you in Keypad Manufacturing

List of ways Capacitive Switch Tester Assists you in Keypad Manufacturing

Aug 17, 2021

Switch tester; a central practical tool

The Switch Tester is a very practical tool that should be part of your toolbox. It serves to identify which is the Phase (positive) wire. And which is the Neutral wire in your electrical system while measuring angular torque. If said this Capacitive Switch Tester lies at the heart of testing tools; it won’t be wrong.
Capacitive Switch Tester

But do you know how to use it? What do the values ​​that appear on the digital model display mean? What are the keys involved in it? Similarly, what measurements you would have to consider? Moreover, how they differ from each other. Let’s explain it to you!

Test Keys involved in switch testing

With an injected cable in transparent PVC and a carbon steel rod, it measures between 100V and 500V. These test keys would help you in figuring out; weather your keyboard is faulty or not. Hence, it would give you a track and direction to work on. Similarly, this would enhance gaming experience manifold.

This is how you test your keyboard with Capacitive Switch Tester

  • Place the tip of the key into one of the sockets holes.
  • Moreover, Place your finger on the other end of the key
  • On   switch’s internal light means phase wire is positive and off means a neutral wire.

Digital Test Key

With injected black PVC cable and carbon steel rod, it measures between 12V and 220V, on shielded wires. It has a liquid crystal display that indicates, within pre-determined scales, the voltages detected.

Capacitive Switch Tester when linked with digital test keys works for enhancing the authentication, when working on digital aspects. You use technology in a particular pattern that makes smart devices work as key. In addition, you do grounding and continuity tests.

Direct Measurement – How to use:

Let’s overview the direct measurements that are involved in testing. This would help you in getting some voltage values and indications that reflects the results of switch testing. You would than work on the set criteria’s that are required for your task, not just with more ease but with more surety.

  1. While using Capacitive Switch testerfor DC voltage measurements (batteries and batteries), keep a finger in contact with one of the battery poles and the metal part of the test switch on the other pole. The lightning bolt symbol will appear, and the approximate voltage value will be indicated on the display
  2. Place your finger on the DIRECT MEASUREMENT contact and the metal tip of the test switch on the wire or circuit point you want to measure
  3. The lightning bolt symbol and the voltage value will be shown on the LCD display.
  4. Among the numbers that will appear, the last indication will be the approximate value of the measured voltage.

Note: If while working with Capacitive Switch tester; if value which you have measured is 70% below than expected value. The tester will show the approximate value on the lower scale of the test switch.

Indirect Measurement or Inductive Test – How to use:

  1. Place your finger on the INDUCTIVE TEST contact and the metal tip of the test switch on the covered wires.
  2. The appearance of the lightning bolt symbol on the display indicates the existence of voltage or phase in the wire and continuity.

Note: Do not use a Switch Tester to tighten screws, as it may impair its functionality.

The inductive load converts the current into the magnetic field.

How the capacitive switch works under Capacitive Switch tester?

In fact, capacitive switch controls the flow of current entering and leaving a circuit and, if the difference between these exceeds a certain value, it interrupts it.

Difference between magneto thermic switch and differential switch

From technical point of view, however, we hear about a magneto thermic switch or a differential switch apart from Capacitive Switch tester. What are these devices; what is difference between them? Moreover, what is their working and how do it differs. Similarly, what makes them work the way these switches do?

What is the switch tester for?

The differential switch has the purpose of protecting in case of electrical leakage, therefore of earth fault or electrocution.

It protects people from direct or indirect contact with current but offers no overload or short circuit protection. Like Capacitive Switch tester it is designed in certain way that enhances their functionality and capacity for the ultimate required purpose.
Capacitive Switch Tester 2021

What is working of Capacitive tester?

For carrying out this working, metal exterior part is common by these under consideration switch tester. Then the changes that are occurring in the   capacitances would be noted.

When you touch these metal plates; the capacitance would get increased and hence, switch is triggered.

Thermal release and Capacitive differential switch, as   the life-saving device

The thermal release has an “inverse time” operating principle: the higher the current, the shorter the trip time. Magnetic release, on the other hand, operates at “tripping time”, activating very quickly as soon as the current exceeds a certain threshold value. Capacitive Switch tester releases thermal heat.

Types of involved protections in capacitive differential switch:

The device will therefore allow three types of protection to be carried out:

  1. Magnetic protection, in case of short circuit
  2. Thermal overload protection, for instance; when the system absorbs more energy than is necessary for its operation
  3. Differential protection, in case of direct contact with live parts or current leakage.

It works not just as sensor but also as actuators. Capacitive sensing has wide range of applications on practical grounds. Capacitive Switch tester is common in this regard.

How to test the capacitive switch (RCD) while working on Capacitive Switch tester?


The capacitive switch has a test button, generally marked with the letter T, which, if activated, verifies the correct operation of the differential part. Carry out the test at least once a month, in order to make sure that the switch works correctly and protects it from any contact with live parts.

If everything works correctly the buttons should remain in the ON state; if this does not happen, it means there is fault on the circuit or on the capacitive switch itself, so it is advisable to request the intervention of a technician.

Parameters on which cost of RCD is dependent

RCD here means Residual Current Device. For RCD testing Capacitive Switch tester is common; cost of which depends on the main parameters that distinguish it:

  1. The breaking capacity: value dependent on the short-circuit current at the installation point
  2. The rated current: the maximum current of the circuit to be protected
  3. The residual current tripping: value of the difference between input and output which determines tripping of the residual current device.

There can be many reasons why the lighting fixtures in the room do not light up. Most often, problem lies in the burned-out bulbs themselves, but sometimes there are other situations. How to check the switch which uses various tools will be clear from our review.

Rockers switch standard type

To check, you will need to have free access to the terminals of the device. There are several options for performing this procedure, which depend on the features of the execution of model.

Sometimes it is enough to open the upper part of the device, it is necessary being remove in some cases. From its location by loosening the spacer fasteners. Don’t need to disconnect the power wiring.

How to check a switch with a millimeter?

You will need to select the measuring mode of resistance parameters on the device. Next, make sure to turn off the machine that powers light. The terminal leads are connected to the leads of tester. Everything is now ready to determine resistance. We test multimeter using Capacitive Switch tester.


Multimeter installation and its working


We install it to determine the operability of the switch in the position of measuring the mains voltage. “Landing” on the terminal contacts is performed after disconnecting the power supply. The immediate measurement procedure takes place after turning on the power supply.

A prerequisite is the presence of at least one working lamp in the luminaire.

Look at the correct test of a two-button switch using a multimeter:

While working on electronical aspects it gets critical for us to make sure that there is now flaw on the certain area; we are working on.

You can measure capacitance using Capacitive Switch tester and a multimeter.

How to check the switch with an indicator screwdriver

When the key is in the disabled state, the test procedure is carried out by the phase indicator at the terminals.

It means that the problem does not lie in the switch. Next, we turn on the light and use the indicator to test the second connection. Consider two ways to break phase or neutral wire. The zero end of the wire is led directly to the luminaire, and the other, at break. In this case, voltage is present.

Voltage measurements and safety precautions in an indicator screwdriver

Capacitive Switch tester has simple structure. A malfunction is indicated by a violation of such a rule. Here, the phase “watch” occurs on the lamp, and zero is put into a gap. When the position is on, there is no voltage on both terminals, and its presence on at least one is a sign of a malfunction of the switch.

A very gross error that can cause negative consequences – laying the phase directly to the luminaire and breaking the “zero”. While doing all this you do need to take safety measures in consideration. The best you can do in this regard is that; carry out all measurements and performance with gloved hands.


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