2.4GHz TNC/R replacement antenna for S Series instruments.Allows communication between Trimble robotic-enabled total stations and Bluetooth-enabled devices when paired with an EM120 2.4 GHz Module (P/N: 110238-00-1). Providing seamless integration to robotic total stations through a wider range of data collectors—without compromising range or robotic functionality. Note this accessory is not compatible with Trimble SX10 or SX12 Instruments.