Charts only - Recorder sold separately Recorders are ideal for monitoring long-term temperature trends in areas where proper temperatures are critical to product stability. Designed for use in blood banks, laboratories, storage areas, refrigerators, or freezers. Cord-free, portable, and easy to use, recorders can be placed directly in an environment that needs to be monitored, and mounted on a desk or wall. They feature spiral-wound bimetallic strip transducer, hinged door, built-in slot for optional tie-down cable and lock, battery door, and durable, corrosion-resistant black ABS and polycarbonate enclosure. Recorders come with or without digital LCD, and can be set to 7-day or 24-hour recording times. They are °C/°F switchable.