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4 Channel Relay Module NEO-M8N GPS / GNSS Module with EEPROM nRF24L01+PA+LNA with Antenna 2.4GHz Wireless Transceiver XL4005 Step-Down Adjustable DC-DC Switching Buck Converter
4 Channel Relay Module
Price: $5.48
Sale Price: $4.45
Savings: $1.03

(9)
nRF24L01+PA+LNA with Antenna 2.4GHz Wireless Transceiver
Price: $6.30
Sale Price: $5.25
Savings: $1.05

(3)
RobotDyn TM1637 6 Digit LED Display with 0.56" Digits RobotDyn Sound Detector RobotDyn Digital IR Receiver US-015 Ultrasonic Distance Sensor Module
RobotDyn Sound Detector
Price: $1.75

(1)
ESP8266 ESP-12F WiFi Module 3 Wire Voltmeter Module RobotDyn TM1637 4 Digit LED Display with 0.56" Digits Boffintronics Haptic Feedback Module
ESP8266 ESP-12F WiFi Module
Price: $5.25
Sale Price: $4.95
Savings: $0.30
3 Wire Voltmeter Module
Price: $3.25

(4)
ACS712 Current Sensor Module +/- 20A ACS712 Current Sensor Module +/- 5A 2 Wire Voltmeter Module ACS712 Current Sensor Module +/- 30A
2 Wire Voltmeter Module
Price: $2.75

(3)
XL6009E1 Step-Up Adjustable DC-DC Switching Boost Converter 1 Channel Relay Module (Active High Control) 1 Channel Relay Module (Active Low Control) TCS3200 Color Sensor Module