Continuous/Intermittent Suction Regulators - 881VR Series The 881VR Series Continuous/Intermittent (Combo) Suction Regulators provides both continuous regulated suction and intermittent regulated suction. This regulator is available in three regulated vacuum ranges: 0-160, 0-200, and 0-300 mmHg. Factory default setting for intermittent regulation is instant off, meaning the timer is set at 8 seconds OFF/ 16 seconds ON, reverse order available. The timer can be easily adjusted from the back of the regulator if necessary. A variety of inlet and outlet fittings are available to cover a wide range of customer needs. Gauges are dual scale (mmHg/kPa) and clockwise, but is also available in ISO styles (counter-clockwise). 0 - 160 Gauge 2-1/2" diameter gauge Dual scale mmHg and kPa Glow in the dark gauge Adjustable On/Off timer Face Cover (body) - ABS Plastic Also available in digital Dimensions without adapters or fittings: Height - 6.3" (160 mm)Width - 3.15" (80 mm)Depth - 3.94" (100 mm)Weight - 17.6 oz(0.5 kg) *made to order cannot be returned