Quectel L86-M33 GPS Module. Supported Bus Interfaces: UART. Number of Channels: 22 (Tracking), 66 (Acquisition). Acquisition Sensitivity: -148dBm. Tracking Sensitivity: -165dBm. Dimensions: 18.4 x 18.4 x 6.45mm. Height: 6.45mm. Length: 18.4mm. Maximum Operating Temperature: +85°C. Minimum Operating Temperature: -40°C. Width: 18.4mm.