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Electronic DIY Kit MQ-3 Sensor Alcohol Detector Tester Alarm System Components Suite

Mini 12V Power Supply Tesla Coil Module DIY Spare Space Lighting Tech Electronic Production Kit

Dual Digital Incubator Thermostat Temperature Controller Two Relay Output Thermoregulator 10A Heating Cooling STC-3008 24V

USB Smart Fingerprint Lock Rechargeable Keyless IP66 Waterproof Store Up To 39 Fingerprints for Door Luggage Padlock

AC 110-220V Input DC 12V 5A Output Access Control Power Supply for Door RFID Fingerprint Access Control Machine Device