Intermountain Environmental, Inc

Accuracy: ±0.2°C at 0° to 50°C (±0.36°F at 32° to 120°F)
12 bit resolution
Measurement ranges: 0° to 50°C (32° to 122°F) in water (non-freezing), and -20° to 70°C (-4° to 158°F) in air
Response time: 5 minutes in water, 12 minutes in air (typical to 90%)
Capacity: 21,580 measurements, 32 kilobytes total nonvolatile EEPROM memory
Rugged streamlined case design will withstand years of use in challenging conditions
Slightly positive buoyancy (+13 grams) so it will float if inadvertently dropped in water
Waterproof to 120m (400 feet)
UV-stable plastic for long-term immersion in fresh or salt water*
Optional protective boot available for especially harsh conditions
Infrared communications port is opposite of the attachment end for easy launch and readout while deployed
Blinking LED confirms operation, but may be turned off to reduce logger visibility
Offload data, check logger and battery status while logging
High-speed infrared (IR) interface offloads full logger in less than 30 seconds
Programmable start time/date
User-selectable sampling interval: 1 second to 9 hours, recording times up to several years
Memory modes: Stop when full or Wrap-around when full
Real time clock: ±1 minute per month
6 year factory replaceable battery (typical use**, temperature extremes will reduce battery life)
Battery level indication at launch
Small size: 11.4 cm long x 3.0 cm diameter (4.5" x 1.19") with 6.4 mm (0.25") mounting hole, 42g (1.5 oz)
Precision components eliminate the need for user calibration
NIST-traceable temperature accuracy certification (initial certification included)

*Prolonged exposure to chlorinated water is not recommended. For questions about chemical resistance, contact Onset.
**16 three-month deployments in water (+35°F to +80°F) with 4 minute or longer intervals (no multiple sampling)