This listing is for a Wonderful Deal on this 90-DAY-WARRANTY Condition I2R THERM-O-WATCH L11-1500 LIQUID LEVEL MONITOR THERMOMETER as can be seen in the pictures.
Technical Information in Italics below was taken from Manufacturer's website:
I2R Therm-O-Watch L7-1500 Liquid Level Monitor
Features:
Built-In Alarm
Integral Voltage Control
Heavy Duty
The I2R Therm-O-Watch L7-1500 Liquid Level Monitor consists of a Sensing Head and an Amplifier/Controller. The Sensing Head clips onto thermometers or other nonmetallic tubing and contains a small electronic oscillator that is sensitive to minute changes in the electrical "Capacitance to ground". A change in liquid level affects this oscillator and activates the Amplifier. Sensitivity when using polar liquids is determined by the dielectric capacity of the liquid column. In liquid level applications, an 8 mm diameter glass tube containing water has a sensitivity of about ± 0.2 mm.
When a change above or below the preset level is sensed, two power outlets on the front of TOW will be activated. One outlet is normally ON and the other normally OFF. Power output, which varies with each model, can be used to turn heating mantles, cooling systems and other electrical equipment ON or OFF.
IMPORTANT: The unit came as a Surplus from a Federal University lab and has been Fully Tested by Technical Alternatives which checked the operational capacity, that's why we are able to offer a 90-DAY-WARRANTY on this unit!!!
The picture is the actual items buyer will receive.
