IJL1000 Features: * State certified for MD, TX, VA and WV * West Virginia required test side and rear glass * Test range 0pct to 100pct * Accuracy 3pct (+/-) * Tint Meter For Window Film Specifications: * Repeatability 1pct (+/-) Power: (2) 9 volt batteries; Auto calibrating; Thickness range: 0-5". Warranty: * 90 day warranty on material and workmanship