4 Pack 12V One Channel Relay Module Relay Switch with OPTO Isolation High Low Level Trigger (12V) auspowers_batchsix and fast pairing with smart

and fast pairing with smart phones and tablets

Wrist-Mounted Navigator

Weighing Sensor Transmitter Tension Sensor Transducer Weight Transmitter Amplifie Voltage Current Converter Sensor Amplifier Load Cell Amplifier Linear Differential Input Voltage

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4 Pack 12V One Channel Relay Module Relay Switch with OPTO Isolation High Low Level Trigger (12V) auspowers_batchsix and fast pairing with smart4 Pack 12V One Channel Relay Module Relay Switch with OPTO Isolation High Low Level Trigger (12V) Module description: 1. The module Operating voltage 12V; 2. Fault tolerant design, even if the control line is broken, the relay will not operate; 3. The power indicator (green), the relay status indicator (red); 4. Module size: 50mm26mm18. 5mm (LWH). Interface: InputVCC: Relay power supply +GND: Relay power supply IN: Signal trigger input (High or Low