Check the listing for details. Used Omega CTXL TRH-W Portable/Wireless Universal Circular. Condition: Used. Listed at 250.00 USD. The CTXL Series circular chart recorders from OMEGA combine form and function in an easy to use two-channel circular chart recorder with a large, 200 mm (8") diameter chart, and dual channel LCD readout. The CTXL recorder is offered in 5 models, Ambient Temperature and Relative Humidity, Wireless Temperature/ Relative Humidity with an RF range of 90m (300 ft) line of sight maximum, dual thermocouple (J,K,T), dual process (1 V, 5 V, 10 V, or 0/4 to 20 mA), or pH/ RTD temperature. The CTXL has a custom LCD readout that displays the current values of both channels, and can indicate the min, max or average input values as well. The display also indicates the chart speed (1, 7 or 32 day), battery status, high and low alarm indication, keypad lockout status, and battery life. Additional features of the CTXL include dual relays with contact closures for high alarms, and dual voltage outputs for low alarms to drive external relays. A built-in audible buzzer also informs the user of an alarm condition. A hidden key (White Box) can lockout unauthorized access to the front keypad, preventing changes to the recorder settings. The CTXL features a rugged, ABS enclosure, suitable for industrial environments, but it’s also intended to fit right in to other environments, such as museums, art galleries, computer rooms, labs, clean rooms, even hospitals. The CTXL is designed for both benchtop and wall mount operation a convenient base rotates out of the way, and is hidden by a decorative foot cover for wall mount use.