Ion Science FirstCheck 1000+ (4-gas + PID Used, not completely working)

Description

Ion Science FirstCheck 1000+ (Used).
This is a 4-gas unit with PID in ppm. Unfortunately, the O2 sensor is no good, and Ion Science does not sell replacement parts. The rest of the sensors work great, but there is a constant alarm that goes off due to the bad O2 sensor.
This comes with a custom Pelican carrying case that is great for protecting your investment. It also come with one replacement filter.
This item is still in great shape, and if you can turn off the alarm you can have a great little 3-gas meter and PID. It may be possible to turn off the O2 channel, but you will need an older windows computer to get the IR connection working.
This is powered off of 4 AA batteries. It comes with a screwdriver to replace the batteries when needed.
This item is priced to sell due to the sensor and alarm issues.