Veho Cave Wireless Outdoor Siren with Battery. Type: Wireless siren, Placement available: Outdoor, Maximum operating distance: 200 m. Power source: Battery, Operating voltage: 12 V, Battery type: D (LR20) Weight: 929 g, Package weight: 1.46 kg, Height: 220 mm. Country of origin: China, Products per master (outer) case: 8 pc (s) , Master (outer) case gross weight: 13 kg. Battery weight: 285 g, Battery capacity: 22.5 Wh