Ambient Weather TM-206 Solar Power Meter (Pyranometer)

Specifications:
Battery life: approx. 100 hr.
Accuracy: 10W/m² [3 BTU/(ft.²*h)] or 5%, whichever is greater in sunlight; Additional temperature induced error: 0.38W/m²/deg C [0.12 BTU/(ft.²*h)/deg C] from 25
Operating temperature: 5 to 40degC
Storage temperature: -10 to 60
Display:
Large 3.5" digits LCD display
Sampling Time: Approx. 0.25 seconds
Resolution: 0.1W/m², 0.1 BTU/(ft.²*h)
Range: 1999W/m², 634 BTU/(ft.² * h)
Dimensions & weight: 5(L) x 2(W) x 1.5(H) in., approx. 0.3 pounds
EMC: this instrument is EMC-compliant and has undergone compatibility tests according to EN61326 (1997) + A1 (1998) + A2 (2001)
Accessories:
User's manual
9V battery
Soft carrying case.