CR4 & KTH is a multifunctional device that records temperature and humidity. CR4 is easy to use. All parameters are displayed on the LCD screen.
CR4 & KTH use 2 independent pens written on 6 "diameter paper. Each writing has a different color. The graph can be turned 1 cycle or continuous rotation.
CR4 & KTH can alert with buzzer signal when temperature / humidity exceeds threshold. Each threshold is set independently by the keys on the front of the device. User can set alarm delay time. RS-232 output allows connection to a computer to retrieve or monitor recorded data (optional).
Power supply from standard 220VAC-12VAC adapter, 50/60 Hz. Also CR4 can use 12VDC power from the car, train or battery source. Backup batteries can work within 48 hours in case the main power is lost.
All functions of the CR4 can be accessed through the buttons on the front of the device. The setting data is stored even when the power is turned off.
