5Pcs 2 Channel Relay Module SMS GSM Remote Control Switch SIM800C STM32F103CBT6 for Greenhouse Oxygen Pump Smart H Shaving & Hair Removal Cable Length: Approx

Cable Length: Approx

- LCD display: 2

all parts can be easily put into the package

Stylish Design: This professionally crafted aluminum hub effectively saves your desk space and expands your connectivity devices

In-Ear Waterproof Level IPX0 (Not Protected) Applicable Products Universal Headphone Features Phone Control Radio Tuner No Support Memory Card No Support Apt-X Yes Frequency Response 20-20000hz Impedance 16 ohm Packing List 1 x Earphone

5Pcs 2 Channel Relay Module SMS GSM Remote Control Switch SIM800C STM32F103CBT6 for Greenhouse Oxygen Pump Smart H Shaving & Hair Removal Cable Length: Approx5Pcs 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