The Pendant Base Station and Coupler provide fast optical infrared (IR) communication for easy data logger launch and readout of HOBO Pendant data loggers. The Base Station connects via USB to a host computer, while the Coupler attaches the data logger to the Base Station for communications. The Pendant Base Station offloads full 64K data logger in 30 seconds or a full 8K data logger in 6 seconds, and is splash resistant.