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 25Operating temperature: 5  to 40degCStorage temperature: -10  to 60Display:Large 3.5" digits LCD displaySampling Time: Approx. 0.25 secondsResolution: 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 poundsEMC: this instrument is EMC-compliant and has undergone compatibility tests according to EN61326 (1997) + A1 (1998) + A2 (2001)Accessories:User's manual9V batterySoft carrying case.