Commercial 800DPA 811DPA50 Driftex Electronic Lavatory Faucet with Proximity Sensing Technology - Battery Operated, 0.5GPMDriftex Electronic Lavatory Faucet with Proximity Sensing Technology Battery Operated, 0. 5GPM The perfect blend of designs and finish with heavy commercial innovations and durability High Arc Spout Hands free activation, entire spout is sensor Adjustable sensing range, auto shut off, metering mode and periodic rinse feature Mixing valve required 2. 5" max. deck thickness Order 061269A for 4" optional coverplate Order 061269BL for 4" optional