The LIW-01 Pulse counter with SUPLA, manufactured by Zamel, is an electronic part with a protection rating of IP20 for indoor use and can work in temperatures between -10 and 55 °C. It is powered by 12-24V AC and 12-24V DC, has a 1-entry and is enclosed in a DIN housing. This part is capable of counting pulses of electrical energy and is suitable for industrial control and monitoring applications.