This product is either discontinued or we cannot get that from suppliers.
Dahua DH-IPC-HDW2431TP-ZS-27135-S2 4mp Starlight Ip Turret Motorised Camera, Sensor: 1/3” 4Megapixel progressive CMOS, Effective Pixels: 2688 (H) × 1520 (V), ROM: 128 MB, RAM: 128 MB, Electronic Shutter Speed: Auto/Manual 1/3 s–1/100000 s, Focal Length: 2.7 mm–13.5 mm, WDR: 120 dB.
With upgraded H.265 encoding technology, Dahua Lite series camera has efficient video encoding capacity, which saves bandwidth and storage space.