Hikvision 2 MP Smart Hybrid Light Varifocal Bullet Camera DS-2CD3621G2-LIZS

The DS-2CD3621G2-LIZS is the bullet you reach for when the scene is a line rather than a point — a fence run, a wall top, the edge of a yard — and no two poles on it sit the same distance from what they watch. It is a Hikvision 3-Series network camera at 2 MP: motorised varifocal lens (the Z), hybrid-light imaging (the LI) so it holds colour after dark, and the -S suffix, which conventionally brings audio and alarm input and output terminals out on the tail.

A boundary is a long thin scene viewed obliquely: the near end of each field of view is a few paces off, the far end a vanishing point. It punishes a fixed lens, lazy spacing, and light aimed with no thought for the next camera along.

Where it earns its place on a site

Along a run, the unit matters less than the overlap between units: each camera looks along the line and hands over to its neighbour before its own far field turns to mush. The classic error is mounting them in opposed pairs: each camera then stares into the supplement light of the one opposite, and both pictures wash out at the range you cared about. Cascade them in one direction, or stagger them so the light throws outward. A perimeter is one camera repeated until the line closes, and the quickest way to break it is to let two of them look each other in the eye.

The motorised lens is what makes an uneven run survivable. Real fences do not oblige with equal spans: one pole sits beside a gate, the next looks down open ground. A fixed lens means accepting that mismatch or ordering three part numbers; here you order one and set each view from software once it is up. Where a position is a fixed distance that will never change, a fixed-lens hybrid-light unit like the DS-2CD1023G2-LIU is the cheaper answer, and mixing the two along one run is sensible.

The alarm terminals are the part most quotations ignore. They tie the camera to whatever already guards the line — a gate contact, a beam, a relay from the intruder panel — so the trip and the camera’s view of it corroborate each other rather than filling two separate alarm lists.

Before you order — three things to confirm

• Distances at each pole. A motorised lens covers a range, not everything. Record the real near and far distance at each position and check it against the lens range on the datasheet.
• Which way each camera faces. Mark the direction of every unit and its light on the drawing; if two end up opposed, re-plan before the brackets go up.
• What the alarm terminals connect to. Name the gate contact, beam or panel zone, confirm a spare input or relay exists, and allow cores in the cable schedule.

Technical specifications

• Type: network (IP) bullet camera
• Series: Hikvision 3-Series
• Resolution class: 2 MP
• Lens: motorised varifocal
• Supplement light: smart hybrid light — infrared and white light
• Terminals: audio and alarm input and output, per the -S suffix
• Full manufacturer datasheet available on request — call 16454

Compatibility

A standard Hikvision IP camera, recorded by Hikvision NVRs and managed through the usual Hikvision client software. Confirm on the datasheet how it is powered, and check your recorder’s firmware presents its smart events as triggers, not plain motion.

What’s in the box

No bracket, junction box, power supply or cable is listed as included. Carton contents for the current revision are confirmed on the order — tell us the quantity and we will confirm what ships with it.

Common questions on this model

We are covering both sides of a fence. Will the cameras blind each other?
They will if they face each other. Cascade them so each looks the same way along the line, or offset them so the light throws outward.

Can I set the zoom without going back up the pole?
Yes. The lens is motorised, so the field of view is set from software once the camera is connected — one commissioning visit across a long run, not several.

What can I wire to the alarm terminals on a boundary?
A gate contact, a beam across a lane, or an output from an existing intruder panel, so both systems agree on one event.

Genuine Hikvision stock, official one-year manufacturer warranty, delivery across Egypt. Call 16454 to size a perimeter run before you commit to a count.