Hikvision Thermographic Thermal & Optical Bi-spectrum Network 32x PTZ, 256 × 192 resolution, 4M Optical, 4.8 -153mm lens, 1.2m min. focusing distance, up to 100m IR range, Temp Range: -20°C to 550°C, Audio/Alarm, 24 VAC ± 20%/ 48 VDC ± 20%, 5 year warranty