The IR Sensor uses a twin-beam system to respond quickly when needed, and to eliminate false activations. The electronics can be adjusted between static mode sensing the complete IR beam and dynamic mode sensing only hand motion. Faucet body is chrome-plated solid cast brass body. Centershank mounting with optional 4" centerset trim plate available. Vandal resistant. The sensor module, circuit board and solenoid valve are enclosed in the solid cast brass faucet body. The faucet also features a vandal-resistant aerator. The vandal-resistant aerator produces a .5 GPM flow rate.