TechInfo: Input voltage: 3x AAA, alkaline batteries (not included);
RF frequency: 433,92MHz;
RF range: 15 to 50m without obstacles;
IR range: 3 to 7m without obstacles;
Certifications: CE marked;
Special specifications: Encrypted;
Colour: Light and dark blue.Warning: This equipment has been used in tests and demonstrations. It has some signs of usage.