RD-87 Series strip chart recorders monitor J thermocouples, temperature, temperature/ humidity, voltage, current, or 4-20 ma input. All have an LC display and record on a 4-in. wide strip chart with a single pen, except for the two-pen temperature/humidity model. Adjustable delay prevents nuisance alarms. Omega Engineering, Inc., Stamford, CT• J Thermocouple, Temperature, Temperature/Humidity, Voltage, Current, 4 to 20 mA Input Models • LCD Alphanumeric Display, 16 Characters 2 Line • 100 mm (4") Strip Chart • Metric (mm) or Standard (inch) Charts • Probes are Field Interchangeable and Can be Extended • Over/Under Alarm with Relay and Beeper, Selectable Delay Feature • Battery Backup for Up to 48 Hours • +12 Vdc for Mobile Applications Compatible