DS-2CD3121G2E-LIU(/AB)

The Hikvision DS-2CD3121G2E-LIU(/AB) is a 2 MP Smart Hybrid Light fixed-dome network camera designed for offices, hotels, hospitals, retail facilities, schools, residential buildings and other professional CCTV applications. It uses a 1/2.9-inch Progressive Scan CMOS sensor with 1920 × 1080 Full HD resolution, selectable 2.8 mm or 4 mm fixed lenses, colour sensitivity down to 0.01 lux, and Smart Hybrid Light combining IR and white illumination up to 30 metres. Motion Detection 2.0 supports human and vehicle classification, while H.265+ compression reduces recording bandwidth and storage requirements. The camera also provides Digital WDR, BLC, HLC, 3D DNR, a built-in microphone, PoE power, IP67 weather protection and IK08 vandal resistance; Hikvision officially lists both the standard LIU and /AB variants.For VEGA Digital IT Solutions LLC, as a SIRA-approved CCTV camera supplier and organized Hikvision partner/integrator, this model can be incorporated into professionally engineered surveillance systems throughout Dubai and the UAE. For SIRA submissions, however, exact SKU verification is essential: the SIRA approved-camera list I could verify specifically contains the related DS-2CD3121G2E-I under SIRA/2023/7/05438, rather than the exact DS-2CD3121G2E-LIU suffix.Therefore, VEGA should confirm the current SIRA certificate for the exact LIU or /AB variant before describing that individual SKU as SIRA-approved.The related DS-2CD3023G3-LIU(Y) is a newer 2 MP AcuSense Smart Hybrid Light fixed-bullet camera using a 1/2.8-inch sensor, 1920 × 1080 resolution, selectable 2.8 mm, 4 mm or 6 mm F1.6 lenses, very low-light colour imaging down to approximately 0.001 lux, Smart Hybrid Light up to 40 metres, and significantly stronger 130 dB WDR. It adds HikAI-ISP, deep-learning human/vehicle classification, an arrayed dual microphone, IP67 weather protection and IK10 vandal resistance; the -Y version provides NEMA 4X anti-corrosion protection, making it especially suitable for exposed UAE installations. Hikvision’s current firmware catalogue also confirms the separate DS-2CD3023G3-LIUY/SX model family, so VEGA can specify the appropriate standard or enhanced suffix according to the approved project requirement, with the suffix-specific datasheet verified before final procurement.The DS-2CD3621G2-LIZS(U) is the motorized-varifocal alternative: it provides 2 MP resolution, a 2.7–13.5 mm motorized varifocal lens, 120 dB WDR, Smart Hybrid Light, H.265+, PoE, IP67 and IK10 protection, making it particularly useful where engineers must remotely adjust the surveillance view after installation.Importantly, SIRA's published list specifically includes the closely related DS-2CD3621G2-IZS under SIRA/2023/7/05444; the additional L/U suffix must still be checked against the current approval certificate because SIRA approves security equipment model by model.For system installation, VEGA Digital should first perform a complete SIRA-oriented CCTV survey covering entrances and exits, reception and cashier areas, parking and vehicle approaches, sensitive and restricted locations, perimeter areas, lighting conditions, blind spots, camera mounting heights, required identification/recognition distances, recording retention, NVR capacity, PoE/network topology and UPS backup. Under Dubai's current SIRA Preventive Systems Manual, IP cameras must provide at least 1080p Full HD, operate with VBR, have an SNR of at least 48 dB, remain clearly visible, and outdoor cameras or housings must provide at least IP66 protection; cameras facing strong direct or reflected lighting require at least 110 dB WDR or equivalent, while any camera installed at 4 metres or above must provide remote zoom and focus. This means the fixed-lens DS-2CD3121G2E-LIU and DS-2CD3023G3-LIUY should be used where their mounting height and field of view meet the approved design, while the DS-2CD3621G2-LIZS(U) is more appropriate where remote zoom/focus is required. VEGA Digital can then install the cameras using suitable Hikvision junction boxes and brackets, protected CAT6/fibre infrastructure, managed PoE switches, Hikvision NVRs, secure CCTV VLANs and UPS systems; configure H.265+, VBR, Smart Hybrid Light, WDR, human/vehicle analytics, privacy masks, NTP synchronization, recording schedules and cybersecurity; and complete daytime/nighttime image tests, field-of-view and identification checks, remote zoom/focus tests, recording-retention verification and network/UPS-failure testing. SIRA formally tests and certifies security devices for use in approved Dubai security systems, so the exact camera model and suffix in the BOQ should always match the applicable SIRA approval certificate before installation and final project submission.