Diligence EV temperature and humidity data loggers: compact, durable, lightweight and designed for use in many applications including the food, pharmaceutical and chemical industries and the monitoring of medicines and other sensitive materials in transit or storage. The loggers are also ideal for building services, scientific experiments, production processes and heating, ventilating and air conditioning systems. N2001 features:- Internal sensor with measurement range -40 C/-40 F to + 70 C/+158 F All models feature:- Tough, moulded cases, dust and waterproof to IP67 standards Large memory capacity of up to 16000 readings Ability to log over multiple periods Compatibility with the versatile Comark EV software package, shared with the N3014 Graphic Display Monitor and EVt data loggers This software is available in two versions, with the professional version aiding compliance with the pharmaceutical industry regulation 21CFR Part 11 Single, multi-function button LED indicators to show active logging and alarm conditions, plus audible alarm warning Temperature system accuracy, suitable for food industry applications Long battery life Two year warranty