Fast response, accurate and long life sensor
Easy to read 3.5 digit LCD display
Optional oxygen analysis with long life (35 month ) sensor
Operate for 150 hours on four C batteries or with AC power adapter
On / Off switch to conserve power
Linearised output
Waterproof plastic case
Solid state TC sensor

Long life (36 month) R-33D1 high output oxygen sensor drives LCD directly 3/16" x 4ft. sample line