1/2/5/10PCS HC-SR505 Infrared PIR Motion Sensor Precise Infrared Detector Module

1/2/5/10PCS DHT11 Temperature and Relative Humidity Sensor Module for Arduino

1/2/5/10PCS Microphone Sensor AVR PIC Sensitive Sound Detection Module

HTU21D 1PCS Temperature and Humidity Sensor Sensor Module Replaces Simple SHT15

Alcohol Ethanol Sensor Breath Gas Ethanol Detection MQ-3 Module For Arduino

DC3-12V Rain Module / Water Leak Alarm / Foliage Moisture / Snow Detection Probe

Rain Snow Detection Module Water Leakage Alarm Raindrop Detection Probe DC 3-12V

5Pcs DC 5V Digital DS18B20 Sensor Temperature Detection Board Module for Arduino