DC 5V 4-channel 4ch relay board ?? 4CH 4CH Repeater Wireless Remote Module Bluetooth 4.0 BLE For Apple Android phones ? specification: ? Size: 5 x 7 x 1.5 cm Input voltage (module supply voltage): 5V, 12V Bluetooth version: Bluetooth 2.1 + EDR and Bluetooth 4.0BLE two versions Switch channels: 4 Switch electrical parameters: 10A Applies to: Apple Android mobile Internet of Things
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