5Pcs 2 Channel Relay Module SMS GSM Remote Control Switch SIM800C STM32F103CBT6 for Greenhouse Oxygen Pump Smart H Shaving & Hair Removal Player do not need to

Player do not need to waste any time on distinguishing and installing the propellers anymore

Cable Length: Approx

* Wide Application: This fairy lights are waterproof can use in outdoor and indoor perfectly

- LCD display: 2

5Pcs 2 Channel Relay Module SMS GSM Remote Control Switch SIM800C STM32F103CBT6 for Greenhouse Oxygen Pump Smart H Shaving & Hair Removal Player do not need to5Pcs 2 Channel Relay Module SMS GSM Remote Control Switch SIM800C STM32F103CBT6 for Greenhouse Oxygen Pump FZ3064 Package List: 5 X 2 Channel Relay Module SMS GSM Remote Control Switch SIM800C STM32F103CBT6 Use process 1. Insert SIM card 2. Connect the controlled equipment 3. Connect power supply 4. Waiting for equipment to start ready 5. Change the Authorization number (if the device does not have the correct number) 6. Send command to control the