28 Selectable flash patterns plus steady-on; Circuit board is conformal coated to protect circuitry; Features three low intensity LEDs; Easy 'Twist-off' lens for ease of replacement; ideal replacement solution for rotating or strobe beacons; Lightweight, durable polycarbonate lens; This high quality and economical beacon has a wide operating range of 12-80V and low amp draw characteristic of LED technology; The reinforced nylon base with epoxy-sealed electronics provides superior environmental protection against the elements and vibration