Durant Courier Series:
Electronic totalizers and / or speed (= rate) meters with battery power.
LCD display with 10 mm characters
Size 34 x 68 mm, IP 65 protection
Model 53300-400: Totalizer
Model 53300-403: Totalizer for AB 90 °
Model 53300-404: rate meter
Model 53300-405: totalizer and rate meter
Models 53301xxx : extended temperature
Models 53302xxx : with backlight