ESD Testers measure electrostatic discharge by monitoring the surface resistance level to determine whether it is within an acceptable range for safety. An alarm and LED indication (green or red lights) is often used to indicate this. Regular testing of ESD wrist straps and grounding cords, heel straps and ESD footwear is essential for static control. This ESD testers measures the resistance of the external circuit between the metal contact button and the cord connectors or the foot test plates. ESD testers use wrist bands, cords, plates and footwear to connect to the operator. The operator’s body resistance and the fingertip button contacts are all part of the circuit. In case of a failure being indicated, determine whether the wrist strap or the footwear alone is failing by ensuring that the other elements of the circuit are sound. What are ESD grounding wrist straps used for?Workers in the electronics industry commonly use ESD grounding wrist straps to protect sensitive electronic components and equipment from electrostatic discharge. In other applications they’re used to prevent electrical sparks that could ignite flammable liquids, gases and explosives.Why choose RS Components for an ESD Tester?RS Components brings you a wide range of high-quality, great value ESD Testers offering you more choice. Trusted by engineers all over the world, that can offer advice and answer your questions. RS Components offer you free next day delivery.