This small 4.0 size Bluetooth transceiver module allows the device to communicate with IOS Android. It is easy to use and completely encapsulated. possible to set as a slave or master. You can use the AT command to set the transmission. Ultra-low standby power consumption 90uA ~ 400uA. Built in PCB antenna.

Technical specifications:

• Power supply: 3.6V - 6V DC (Can not exceed 6V)
• Dimensions: 43mm x 15mm / 1.69 inch x 0.59 inch
• Net weight: 4g
• Material: CCL Blue color
• Package includes: 1 x Bluetooth 4.0 Serial Wireless Module Only the above package content, other products are not included.

Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.