4 Channel Relay Module SMS Call Controller GSM Remote Control Switch SIM800C

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4 Channel Relay Module SMS Call Controller GSM Remote Control Switch SIM800C
Product Description
4 Channel Relay Module SMS Call Controller GSM Remote Control Switch SIM800C STM32F103CBT6 for Greenhouse Oxygen Pump 5-12V
Description:
Working frequency: GSM 850MHz, EGSM 900MHz, DCS 1800MHz and PCS 1900MHz.
Power supply interface: Power supply voltage: 5V-12V. When using 9V or less power supply, the current must be guaranteed 1.5A or above.
Relay interface: The output is the passive switch quantity. Using 250V 10A relay, the maximum power is 2500W, you can directly operate most of the electrical appliances on the market.
SIM Card Socket (Inside the shell): Insert micro SIM card when system powered off.
Switch quantity interface (Inside the shell: SIG): XH2.54-2P. When the two pins are connected, it will trigger the SMS alarm.
Keys: Press the keys can change the status of corresponding relay when controller is power on. Press key1 when device is power off, then power on, and press the button for 3 seconds, the controller will be back to factory setting. And the led indicators will show this status.
LED interface: There are 2 LED lights named work and err. LED indicators state corresponds to the equipment working conditions are as follows, each column is one state.
Application
Farmland irrigation
Greenhouse
Server room
Pet feeding
Oxygen pump
Roller shutter
Package Includes:
1 X 4 Channel Relay Module with Case
Instruction link pls contact us
Payment
Shipping
Delivery time
Return Policy
Contact us
Payment
1.We accept Paypal payment only , you can use credit card through PayPal.
2.Please make payment asap,then we can arrange shipment for you asap.
Shipping
If total amount ≥ 7usd ,we provide a tracking number with
you.
Delivery time
Normally it arrive in 10-30 business days when your order amount is more than 7usd.
And 30-60 days when amount is less than 7usd.
Return Policy
1.All products are eligible for 30-days money back guarantee.
2.All returns should be guided by us, please contact us for detail before you return anything.
Contact us
We request that you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns.
4 Channel Relay Module SMS Call Controller GSM Remote Control Switch SIM800C STM32F103CBT6 for Greenhouse Oxygen Pump 5-12V Application Farmland irrigation Greenhouse Server room Pet feeding Oxygen pump Roller shutter Package Includes: 1 X 4 Channel Relay Module with Case Instruction link pls contact us