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USB Control Switch 2-Channel 5V Relay Module - Red Only $9.93	MG90S Metal Geared Micro Servo for Plane Helicopter Car Boat - Black Only $4.83
PVC 4-Pin Dupont Cable for Arduino - Black + Multicolored (22cm) Only $1.26	Stud Prototype Expansion Board - Red + Green + Black (Proto Screw Shield Assembled) Only $6.69
Jtron HB100 10.525GHz Microwave Doppler Radar Detector Probe Sensor Only $5.21	DIY Soil Humidity Sensor - Black + Yellow Only $2.94
2 Channel 5V Low Level Trigger Relay Module for Arduino (Works with Official Arduino Boards) Only $3.75	2 Channel 5V High Level Trigger Relay Module for Arduino Only $3.81
1 Channel 12V Low Level Trigger Relay Module for Arduino (Works with Official Arduino Boards) Only $2.69	DC 5V 28YBJ-48 Stepper Motor for Arduino (2PCS) Only $3.71
DIY 5mm Blue Light Light-emitting Diode Set (30 PCS) Only $2.80	DIY Electronic PCB Test Endpoint Pin - Red (100 PCS) Only $3.59
SD Card Reading Writing Module for Arduino Only $1.99	MQ-3 Alcohol Ethanol Sensor Module for Arduino (Works with Official Arduino Boards) Only $2.82
DIY MAX7219 8*8 Dot Matrix Module for Arduino Only $2.99	CJMCU-6750 High Precision UV + Ambient Light Sensor - Purple Only $8.13
12V TDA7297 Dual Channel Power Amplifier Board - Green + White Only $5.12	CJMCU-6675 MAX6675 Thermocouple Module / Temperature Sensor - Blue Only $4.56
OPEN-SMART Micro SD / TF Card Breakout to DIP Board Module for DIY Only $1.74	IR Obstacle Avoidance Sensor Line Tracking Module for Arduino - Blue Only $3.70
2-Way DC Motor Mini Module for Arduino Only $3.38	2-Way DC Motor Drive Module for Arduino - Blue Only $4.13
1-Digit Common Anode 0.56 Digital Display Module for Arduino - Blue Only $2.81	4-Key Button Module Sensor External Keyboard Module for Arduino - Blue Only $3.53
NRF905 Wireless Module Socket Adapter Plate Board for Arduino - Blue Only $3.45	TO263/TO252 to DIP 78M05/IR3205 Adapter Board - Black + Golden (2PCS) Only $1.54
2-Independent Key Touch Button Module Sensor for Arduino - Blue Only $2.22	TO263-5/TO252-5 to DIP LM2596/LM2576 Adapter - Black + Golden (2PCS) Only $1.54
6F22 9V Battery Holder Case w/ DC Jack for Arduino - Black + Red Only $1.99	2*AA Battery Holder Case w/ DC Jack for Arduino - Black + Red Only $1.89
2015NEW KEYESTUDIO MQ-7 Carbon Monoxide Gas Sensor MQ-7 Only $4.48	2015 New keyestudio I2C 8x8 LED Matrix HT16K33 Lattice Module Only $3.55