Automatic measurement and reading PhotoMOS relays can control both low-energy and high-power signals. The structure of photoelectric and power MOSFETs gives them low leakage current and interference immunity. Medical Equipment Many medical devices require processing weak signals, such as electrocardiographs, electroencephalographs, X-ray machines, and CT scanners. PhotoMOS relays can accurately transmit weak signals (less than several hundred millivolts). Furthermore, they can be easily connected to rotating solenoids, such as those used for automatic voltage range adjustment. Security Equipment PhotoMOS relays are ideal input/output interfaces for sensors and alarms in building security systems. Firstly, their low leakage current makes them suitable for weak voltage and current inputs. Secondly, as outputs, they can handle both AC and DC loads, up to 400V. Telecommunications PhotoMOS relays can control weak AC and DC signals in the millivolt and milliampere ranges. Therefore, they are widely used in switches, modems, PBXs, and other equipment. Communication Equipment PhotoMOS relays can be easily connected in parallel, offering high circuit flexibility and can also form power supply circuits. PhotoMOS relays are particularly suitable for office automation (OA) equipment, such as units with the following functions: ● Direct control of C-MOS devices with a 24mW input; ● Interference immunity through optocoupler signal transmission, eliminating the need for additional buffer circuits at the output, thus reducing costs. Reliability is greatly improved due to the absence of leakage current from buffer circuits. PhotoMOS relays are well-suited for measurement scanning; automatic zero-point compensation eliminates zero-point errors; and multi-channel inspection interfaces. Programmable Logic Controllers (PLCs ) PLCs have numerous output interfaces to meet the needs of different types of loads. PhotoMOS relays can block instantaneous surge currents (due to phase differences), eliminating the need for buffer circuits. Furthermore, PhotoMOS relays are small in size, making products more compact.