MQ-4 Methane Gas Sensor Module
$0.78
$0.23
RFID Card / RFID Tag (13.56MHz RF range)
$0.13
$0.04
HMC5883L Triple-axis Magnetometer Board
$1.39
$0.42
IR Line Follower / Proximity Sensor Module
$0.26
$0.08
MQ135 Air Quality Gas Sensor Module
$0.92
$0.28
TTP224 4-Channel Touch Sensor Module
$0.57
MQ-3 Gas Sensor Module for Alcohol Detection
$1.06
$0.32
TTP229 16-Channel Capacitive Touch Sensor Module
Vibration/Shock Sensor Module (SW420)
$0.40
$0.12
MQ-9 Gas Sensor Module for Carbon Monoxide, Methane and LPG
$0.95
Heart Rate Pulse Sensor Module
$1.32
Soil Moisture Sensor Module
$0.35
$0.10
