Detection method of light touch switch with indicator light
The light touch switch with indicator light is also called the light touch switch, but the price of the light touch switch is also higher than that of the ordinary switch, because the light touch switch adds such a function with indicator light, which can serve as a safety indicator in the event of failure. So we know how to detect the failure of the light touch switch with indicator light, What are its advantages in all aspects and what should be paid attention to when using it? For those who are new to the switch, they must lack some knowledge about the switch. I told you about the analysis of the six common problems of the light touch switch before, so the following section will explain how to detect the light touch switch with an indicator light and what advantages it has.
The terminals of the light touch switch with indicator light can be divided into bent foot, straight foot, pad type, quick connection, etc. When selecting a multimeter to test the light touch switch, first connect the two probes of the multimeter to the two leads of the LED of the switch. If the needle deflects more than half, and there are bright spots in the LED of the switch, it means that the LED of the switch is connected in the positive direction. At this time, the black probe of the multimeter is connected to the positive pole, and the red probe is connected to the negative pole. After the two probes are exchanged, they are connected to the LED. At this time, they are connected in reverse, and the needle should not move. However, no matter the forward connection or the reverse connection, if the displayed needle deflects to the end or does not move, it can be said that the light emitting diode inside the light touch switch with the indicator light has been damaged.
Light touch switch with indicator light has three advantages
1. The light touch switch with indicator light also has the safety protection function. If the connection screw part of the switch is protected by the shell, the wire port shall not be exposed during wiring, and the operation and installation are convenient and firm.
2. The interior of the light touch switch with indicator light is additionally provided with a rubber ring for sealing oil, which can prevent some dust, oil and water from entering the interior of the switch. Thus, the good performance of switch operation is effectively guaranteed.
3. All key components of the light touch switch with indicator light are made of imported materials. The contact shell is made of imported flame retardant plastic and other materials, which can enhance the contact wear resistance of the light touch switch.
Precautions for purchasing the touch switch with indicator light
1. Pay attention to whether the reversing of the switch is flexible and free of jamming.
2. Whether the electroplated quality of switch terminals is bright, and whether the switch terminals are oxidized or deformed.
3. Select the light touch switch with indicator light to check whether there are bubbles, lack of material, cracks, shrinkage, etc. in the shape of the switch.
4. Whether the identification information on the switch shell is complete, such as certification mark, manufacturer's trademark, rated voltage, model and specification and other relevant information.