Features: Super low profile for discreet placement Self-adhesive backing for quick simple mounting Multi-voltage input 12 - 24 VDC 23 user selectable flash patterns including steady on 6 powerful LEDs for superior warning Non-volatile memory recalls last flash pattern used at power up Multiple units can be grouped to flash simultaneously or alternately Reverse polarity protection Weatherproof and vibration resistant design for external use 5 year warranty Technical Data: Light Source: 6 LEDs Warning Patterns: 23 Flash Patterns Operating Voltage: 11 - 30 VDC Max Power: 6 W Approvals: SAE J595 Class 1, California Title 13, ECE R10 Connection: 8" (20 cm) wire leads Multi-Unit Sync: Over 15 units Operating Temperature: -30 Degree to +65 Degree IP Rating: IPX5.