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Parameter Value Number of Channels 4 Control Voltage 5V DC Trigger Logic Active LOW (default) Relay Type SPDT (Single Pole Double Throw) Max AC Load 250V AC / 10A per channel Max DC Load 30V DC / 10A per channel Isolation Optocoupler isolated input Indicator LEDs Yes (power + status per channel) PCB Size ~75mm x 55mm Operating Temperature -40°C to +85°C Key Features
8 KB RAM in 64-pin LQFP
3V to 5VDC
home automation
000-g shock rating is well suited for applications such as hard-disk drive protection in personal computers
ACS712 5A Current Sensor Module — Hall Effect AC/DC GY-271 Parameter Value Number of ChannelsACS712 5A Current Sensor Module Hall Effect AC DC The ACS712 is a fully integrated Hall effect based linear current sensor from Allegro MicroSystems. The 5A variant measures both AC and DC currents up to 5A and outputs an analog voltage proportional to the measured current. It provides galvanic isolation between the current path and the microcontroller, making it safe and easy to use with Arduino, ESP32, and STM32 for power monitoring and energy
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