Hanwell Instruments is pleased to announce the launch of the rl4106 temperature and humidity transmitter, the latest addition to its 4000 series of radio radiologgers. The 4000 series is used throughout industry, particularly in the healthcare sectors to enable wire-free monitoring of a site, with real-time alarm notification and allowing historical analysis of the data. Each rl4106 unit reads its on-board sensors to provide accurate and reliable information about environmental conditions. This data is transmitted, at user-defined intervals, to the base station that logs and stores the data pending transfer to a PC for analysis and archival storage. The rl4106 has two sensors as standard: a precision temperature probe and a high quality humidity probe.