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ZEN C35 384 Thermal Clip-On | Magnesium Armor. Factory Pre-Zeroed Precision.

Your day optic. Thermal capability after dark.
384 thermal sensor · 35 mm lens · Factory-collimated clip-on

$1,850.00 USD

Available to order · Ships in 2–3 weeks

Shipping calculated at checkout.

SKU: C35-B

Color: Black

Need help choosing a configuration? Call +1 (469) 498-1090.

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Compare C Series models

C35 You’re viewing

A practical first thermal clip-on.

384 × 288 · 35 mm f/1.0 · Laser rangefinder: Not built in

Device weight: 14.46 oz

$1,850.00 USD

C50

640 detail for the day optic you know.

640 × 512 · 50 mm f/1.0 · Laser rangefinder: Not built in

Device weight: 13.75 oz

$2,950.00 USD Explore C50

C50R

Thermal detail and ranging for your day optic.

640 × 512 · 50 mm f/1.0 · Laser rangefinder: 1,312 yd

Device weight: 14.99 oz

$3,250.00 USD Explore C50R

Full series comparison

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Product details

The ZEN C35 adds thermal capability to a day-scope setup without replacing the optic you already know. Its 384 sensor and 35 mm lens provide a practical field of view for timber, brush and close-to-mid-range predator or hog hunting.

Lightweight magnesium-alloy housing
Factory-collimated clip-on design
Mount to a compatible objective adapter or aligned Picatinny setup

Best for: Hunters who want a compact, value-focused thermal clip-on for mixed terrain.

Setup note: Proper fit and alignment matter. Confirm the adapter, centerline height and zero before hunting.

Modular adapter setup

Zentron C Series uses an M45 × 0.75 eyepiece thread. For a modular scope-clamped setup, start with the matching device-side M45 × 0.75 connector ring (also called an adapter ring), then add the matching scope-side modular clamp. Select the clamp by the measured outside diameter of the day optic’s objective housing at the clamping location.

Use a matched Rusan or Smartclip modular system and confirm the exact components before ordering.

View details

A practical 384 thermal view

The C35 pairs a 384 × 288 sensor with a 35 mm f/1.0 objective lens. A compact choice for scanning timber, brush and mixed terrain.

Add thermal to your day optic

Fit the factory-collimated clip-on ahead of a compatible day scope. Use the correct objective adapter or aligned Picatinny setup, then verify fit, optical alignment and zero before use.

Menus that fit your day optic

Easy Mode emphasizes frequently used functions with larger icons and text. UI Zoom lets you adjust menu size to suit your day-scope view.

IP67 Protection

Magnesium housing with an IP67 protection rating.

32GB Recording

Photos, video and recoil-activated pre-record. The virtual reticle appears in recordings only, not in the live clip-on view.

Compass & Tilt

Integrated digital compass and accelerometer.

Easy Bluetooth connection

Turn on device Bluetooth and open ZSYNC to find and connect your device, without typing a Wi-Fi password. Enjoy live view, remote controls and media downloads. Update your app and device firmware first (ZSYNC 3.0.0+; firmware V2.01+).

Compact magnesium housing

Listed device weight: 14.46 oz. Allow for the weight of your chosen adapter and mount.

Replaceable field power

Two replaceable 18350 batteries. Up to 7 hours of runtime; battery life varies with settings, temperature and use.

Sensor resolution: 384 × 288
Objective lens: 35 mm f/1.0
Weight: 14.46 oz
Thermal sensitivity (NETD): ≤20 mK
Optical magnification: 1×
Battery life (max.): 7 hours

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Sensor & Imaging

C35 specifications — Sensor & Imaging
Detector type	VOx uncooled
Resolution	384 × 288
Pixel pitch	12 μm
Frame rate	50 Hz
Spectral range	8–14 μm
NETD	≤20 mK

Optics

C35 specifications — Optics
Objective lens	35 mm f/1.0
Field of view	7.5° (H) × 5.6° (V)
Close focus	5 yd
Detection range	1,950 yd
Optical magnification	1×

Display & Features

C35 specifications — Display & Features
Display type	OLED
Display resolution	800 × 600
Digital zoom	Clip-on mode: 1× Monocular mode: 2.3–18.4×
Color palettes	Multiple thermal palettes
Connectivity	Wi-Fi, Bluetooth & microphone
Built-in memory	32 GB
Start-up time	Less than 5 seconds
Sensors	Built-in accelerometer and digital compass

Power

C35 specifications — Power
Battery	2 × 18350
Maximum battery life	7 hours
USB interface	USB Type-C

Physical

C35 specifications — Physical
Dimensions	5.59 × 2.55 × 2.48 in
Weight	14.46 oz
Housing material	Magnesium alloy
Connection thread	M45 × 0.75

Environmental

C35 specifications — Environmental
Protection rating	IP67
Operating temperature	−4°F to 122°F
Storage temperature	−40°F to 122°F
Maximum recoil	1,000 g / 0.4 ms; rated up to .300 Win. Mag. and 7mm Rem. Mag.

Need help with setup or service? Contact Zentron Support