The Series T47A2, a mercury-free LCD miniature hour meter, has been introduced to replace the mercury hour meter. With an operating power of 6-24 VDC, this meter features a 5-digit, 4.25 mm LCD display. There is internal memory, maintained by the battery when not in use. Minimum battery life is five years without external power at 25°C. The dimensions of this product are 1.84 × 0.52 × 0.67 in. The Series T47 is ROHS compliant.