Profile: Hanwell Instruments Ltd specializes in the design of data acquisition products. Our product line includes data loggers, radio transmitters, alarm systems and wireless receivers. Our HL4101 datalogger is one of a new series of advanced standalone temperature and humidity dataloggers. These smart loggers are ideal for situations where logging may be temporary, for enclosing with a valuable shipment or situations where a wired or radio system is not the best solution. Our SR2 is the second generation of the Hanwell smart receiver. It is a network enabled receiver, designed for collecting environmental monitoring data from multiple points within a site, or across multiple sites. Our AW02 has the same basic specification as the AW01. The AW02 combines 2 contact inputs with a single channel thermistor temperature sensor.