With this Bluetooth 4.0 BLE relay, you can control some electronic devices through your iPhone or Android phone. This will make your project more interesting.It comes with a protective shell.The shell is effective in blocking dust and static electricity. Specification: Built-in DSD TECH SH-HC-08 Bluetooth 4.0 BLE module supports iOS devices(iPhone and iPad) and Android 4.3 and later devices. Equipped with 12V, 10 A / 250 V AC; 10 A / 30 VDC relay, the relay has long service life and can absorb 100,000 times continuously. Control distance up to 10m (open space environment) Bluetooth 4.0 BLE specification Module operating voltage(VCC):DC 12 v DC control maximum voltage: DC 30 v Switching control maximum voltage: AC 250 v Maximum load power: 600W About APP: For Android : please search "DSD TECH Bluetooth" in the Google Play. For iOS Devices (iPhone or iPad):please search "DSD TECH Bluetooth" in the Appstore. Precautions: 1,This Bluetooth relay is Bluetooth 4.0 specification and is not compatible with any Bluetooth 2.0 SPP device. 2, the maximum load power should not exceed 600W. The relay may be damaged when the load exceeds 600W. 3, This Bluetooth relay uses the Bluetooth 4.0 BLE protocol. The encrypted connection is not enabled. It is not applicable to applications that require data security. Control instruction(Hexadecimal format): Channel 1 ON: A00101A2 Channel 1 OFF: A00100A1 Channel 2 ON: A00201A3 Channel 2 OFF: A00200A2 Channel 3 ON: A00301A4 Channel 3 OFF: A00300A3 Channel 4 ON: A00401A5 Channel 4 OFF: A00400A4 About warranty: DSD TECH provides one year warranty service and Lifetime Technical Support. If you have any questions about this product, please contact us. We will reply you within 24 hours.

DSD TECH provides a one-year warranty on this Bluetooth Relay. If you have any questions, please feel free to contact us. Free APP for iOS devices(iPhone), please search "DSD TECH Bluetooth" in the Appstore. Free APP for Android Phone, please search "DSD TECH Bluetooth" in the Google Play. 2-channel 12V relay switch, A protective case is included to prevent dust and static electricity. Built-in TI CC2541 Bluetooth 4.0 BLE module, supports iPhone devices and Android Phone.