When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
It can also be triggered by an external pulse signal. 1 pcs DC 5-24V 4-Channels Bluetooth BLE 4.0 Relay Module. 3 Bluetooth protocol: Bluetooth Specification V4.0 BLE. 1 phone must support bluetooth 4.0, such as galaxy S4 (android 4.3),phone 4s(IOS8).
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.