Visonic SR-740 PG2 – PowerG Wireless Outdoor Siren.

• Sleek design and robust weatherproof housing (IP55) with high power strobe light
• Loud 105 dBA Piezo siren @ 1 meter
• Prolonged battery life (up to 8 years with typical use)
• Battery type: Four 3.6V/3.5AH Lithium independent cells
• Double tamper protection (wall and cover)