Quectel L76-M33 GPS Module. Supported Bus Interfaces: UART. Number of Channels: 33 (Tracking), 99 (Acquistion). Acquisition Sensitivity: -148dBm. Tracking Sensitivity: -165dBm. Dimensions: 10.1 x 9.7 x 2.5mm. Height: 2.5mm. Length: 10.1mm. Maximum Operating Temperature: +85°C. Minimum Operating Temperature: -40°C. Width: 9.7mm.