NU-CALGON SMOKE PEN REFILL PACKAGE - 6 WICKS TOOLS They are also provided with

They are also provided with three NTC or PTCprobe inputs

With a high-performance lithium battery that provides higher capacity and longer running time

These saddles eliminate common installation problems associated with insulated tubes like damage (tearing) or compression of the insulation leading to compromise of the thermal barrier and displacement of pipe that can lead to piping system leaks

Ultra-low Vapor Pressure - <1 microns for superior vacuum sealing performance

NU-CALGON SMOKE PEN REFILL PACKAGE - 6 WICKS TOOLS They are also provided withSmoke Pens are excellent for observing ventilation, air balancing, smoke detectors, drafts, leakage, and air flow. Smoke tests will effectively and inexpensively reveal leaks in heating and air conditioning duct work, furnaces, fire boxes, exhaust fans, and smoke detectors