Feature: Model: CSK6-YKW Material: Plastic Weight: 117g/4.1oz Count Range: 0~9999 Voltage & Power: AC 220V, AC 2.5VA; Count Speed: DC 20 times per second, AC 10 times per second Indication Error: < 1x 0.00001 Environment Temperature: - 20 ℃ ~ 50 ℃ Relative Temperature: ≤ 85% Installation Method: panel Reset Mode: Pressing type (with lock)