2 Channels 4G Relay Switch SM2-WLTE APP SMS Remote Control Light, Curtains, Garage Door, Water Pump

Operation video of the controller

[@dimitrischoul5871]

What model is this? How is it called?

[@HopE-sv9jk]

Where to buy this?

[@felixbleichenbacher6492]

Does anybody on here know what is the maximum duration that the switches can be closed? The seller's website says 1000 seconds maximum (command SN0000L01T1000), which sounds strange. Is this really true? Does anyone have experience with it? Model GSM-CL4 was able to close the switches betweeen 0.5 seconds and 240 minutes (command SN0000L240CCCC), however GSM-CLç only works in 2G networks, so it's not usable in most countries.

[@ruiensi846]

The L command can be set to a timer of 1000 seconds without any problem. Currently, 2G networks will be shut down in some countries. You may consider our 4G products, which will take the place of 2G smart devices in the future.

[@luigiborello9666]

Ok

[@ruiensi846]

Thank you for your prompt attention and response.