Vista Acoustics RS31.1 Plasma Friendly Surface Mount IR Receiver with Talk Back LED Plasma friendly, CFL, works in direct sunlight Control range: Up to 50 feet indoor on axis (range depends on device being controlled and levels of IR or EM interference), 15 to 20 feet in direct sunlight. Frequency bandwidth: 38K HzIR IR Reception angle: Up to 20 feet distance for + /  45 degree off axis