Size	60 mm x 48 mm x 19 mm (2.4" x 1.9" x 0.7")
Weight	Watertight model (OWL 100); 80 g (2.8 oz.) Non-watertight model; 54 g (1.9 oz.)
Case Material	Watertight model (OWL 100 only);Polyurethane. Non-watertight model; Noryl® Plastic
Operating Limits	-40°C to 70°C (-40°F to 158°F); 0 to 95% RH (non-condensing) on non-watertight models
Clock Accuracy	+/ - 2 seconds per day
Battery	3.6 volt Lithium, 10-years Warrantied (under normal use). Factory replaceable
Memory Size	32 K (32,767 readings)
Sampling Method	First-in, First-out, (First-in, First-out not available with sample rates faster than 8 seconds). Fill-then-stop, Delayed start, Trigger start
Sampling Rate	User selectable rates from 5 per second to once every 12 hours
Resolution	8 bit (1 part in 256). Can be optimized to the equivalent of 10 bit resolution
Communication	Optical Send/Receive from up to 1" between logger and interface cable (with no obstructions)
Alarm Type	Optical (Red LED)
External Connector	Removable snap type connector
PC Requirements	IBM PC or 100% compatible running MS Windows 3.1,95,98, or NT, with a least 2 MB RAM, 2 MB of hard drive disk space and one free serial port
Product Approvals	Meets Part 15 for Digital Devices of the Code of Federal Regulations of the Federal Communications Commission (FCC). Meets Class A radiated and conducted emission requirements of Section 2 of the Radio Interference Regulations of Communications Canada. IEC801-2, 3, 4 and EN55011 covering ESD, RFI Immunity, EFT/Burst and Radiated Emissions respectively for the Commission of the European Communities (CE)
Resistance to X-Rays	Tested for protection against a 160V dose @ 5mA for 30 seconds (150mA-sec) @ 38 inches F.F.D. (about 100 times of an airport X-Ray machine). Tested for protection against Gamma Ray (equivalent to 0.137-1.38 mega volts) IR 192 - 28 curies @ 30 second exposure source to object distance 5"