Gemini Data Loggers (UK) Ltd. (Chichester, UK) has introduced Tinytag data loggers, which monitor conditions including temperature, relative humidity, power usage, CO2, voltage, current and count. The range includes compact units for indoor use and waterproof devices for industrial and outdoor applications. Loggers for monitoring in manufacturing, process and engineering applications have a waterproof and dustproof design. Accompanying probes are available for measuring extremes of temperature, product cores or for comparison of ambient and process temperatures. The range includes a thermocouple logger which supports type K, J, T and N thermocouples, providing fast response, versatile monitoring from -270°C to 1,370°C.