---
title: X-Cite TETREM 4-Channel LED Illumination System
url: https://opti-tech.ca/product/x-cite-tetrem-4-channel-led-illumination-system/
date: 2025-12-09T19:52:42+00:00
modified: 2025-12-10T19:36:59+00:00
lang: en_CA
---

# X-Cite TETREM 4-Channel LED Illumination System

The X-Cite TETREM is designed to cover the four key spectral bands required to excite the most popular dyes used in fluorescence microscopy - DAPI, FITC, mCherry/TRITC and Cy5. There are two different UV LED wavelengths available – 365 nm and 385 nm models - to accommodate your DAPI excitation filter preference. X-Cite TETREM offers the flexibility to operate its four LEDs, either individually or simultaneously, making it well-suited for use with both multi-band and regular filter cubes. Individual LED control will minimize bleed-through with multiband filter cubes and can provide UV-free illumination for reflected light applications. Intensity levels for each channel can be precisely adjusted to optimize excitation of fluorophores or create your perfect white color balance. The X-Cite smartDIAL controller features large tactile buttons, illuminated channel numbers and an OLED display in the central dial to communicate wavelength/intensity information for all four channels simultaneously. With a focus on the key fluorophores and the addition of individual LED control, X-Cite TETREM is a versatile illuminator. It is a smart solution for routine applications and an ideal way to upgrade a microscope.

| TECHNICAL SPECIFICATIONS |  |  |
| --- | --- | --- |
|  | **MODEL: XT640S** | **MODEL: XT640L** |
| Wavelength Range | 360-660 nm | 380-660 nm |
| LED Peaks (nm) | 365, 475, 555, 635 | 385, 475, 555, 635 |
| External Power Supply | Universal input 100-240 VAC, 50/60 Hz 1.85A max/115V, 1.0A max/230V |  |
| Power Input to X-Cite Unit | 24VDC, 4.0A |  |
| LED ON/OFF Response Times | 100μs TTL / 1ms USB |  |
| Control Options | smartDIAL ON/OFF - TTL compatible Intensity - Analog RS-232 commands (SDK available), USB |  |
| I/O Connections | Mini DIN plug, 9pos (smartDIAL) USB (B-type) DB25 x 8 BNC (4 x TTL, 4 x Analog) |  |
| Dimensions (W x H x D) | 95 mm x 230 mm x 212 mm (3.7" x 9.1" x 8.4") |  |
| Weight | 3 kg (6.6 lb) |  |
| Shipping Dimensions | 400 mm x 380 mm x 330 mm (16" x 15" x 13") |  |
| Shipping Weight | 5.5 kg (12 lb) |  |
| Certifications | CE, RoHS, UKCA, KC |  |
| Warranty | LEDs – 25,000 hours or 3 years All other X-Cite TETREM components – 1 year, parts and labor (excluding LLG) |  |