ZMPT101B
Active Single Phase Voltage Transformer Module AC Output Voltage Sensor Mutual Inductance Amplifier for Arduino Mega ZMPT101B
5V30A RELAY
5V 30A Two-way isolation relay module High/low level trigger 5V 30A 1-Channel Relay Module+Electronic With Optocoupler
CJMCU-535
DC 3V-5V CJMCU-5351 Si5351A Si5351 I2C Clock Generator Breakout Board Module Signal Generator Clock 8KHz-160MHz For Arduino
USB TO RS485
USB to 485 Module FT232 Chip USB to TTL/RS485 Double Function USB 2.0 to TTL RS485 Serial Converter Adapter
18650 battery module
18650 battery 3.7V turn 5V2A boost Module DIY rechargeable treasure/Mobile Power motherboard/circuit board
JSN-SR04T
Waterproof Ultrasonic Module JSN-SR04T / AJ-SR04M Water Proof Integrated Distance Measuring Transducer Sensor for Arduino
Soil Moisture Meter Detection Module
Soil Moisture Meter Detection Module Intelligent Electronic Soil DIY Sensor for Arduino Moisture Module Robot Suitable U7Q9
HC-05
HC-05 HC 05 hc-06 HC 06 RF Wireless Bluetooth Transceiver Slave Module RS232 / TTL to UART converter and adapter for arduino