The switch has seven independent relay switches and you can activates NO. It will reject the call and turn on the device connected to it without answering, so no call charges will be incurred when dialing this machine. This GSM relay switch has its own number recognition function, and unauthorized numbers will be automatically ignored. 4G design, through 4G, 3G and GSM, this relay switch can work anywhere in the world and it can carry out remote password operation and password change.
Digital programming can be carried out quickly and easily using SMS or the on-board quick teaching button. Condition:100%Brand New Item Type:7 Channel Relay Switch Controlling Material:ABS Plastic Color:As Pictures Shown Voltage:12-24V DC European Frequency: LTE-FDD:B1/B3/B5/B7/B8/B20, LTE-TDD:B38/B40/B41 WCDMA:B1/B5/B8, GSM/EDGE:B3/B8 US Frequency: LTE-FDD:B2/B4/B12, WCDMA:B2/B4/B5 Australian Frequency: LTE-FDD:B1/B3/B7/B8/B20/B28A, LTE-TDD:B38/B40/B41 WCDMA:B1/B8, GSM/EDGE:B3/B8. 1 x 4G/3G/GSM 7-Way Remote Switch Controller 1 x USB Cable 1 x USB Programming 1 x Antenna 1 x Manual. We offer the best prices around on high quality products.
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