Sifam Tinsley Backlight Indicator Display Module AC 821

Sifam Tinsley AC 821 backlight is a high-quality display backlighting module engineered to provide reliable illumination and accurate indication in electronic displays. Manufactured in the United Kingdom, it complies with performance standards based on BS6840 Part 17:1991 and IEC 268-17:1990, which ensure excellent dynamic characteristics, frequency response, low harmonic distortion, input impedance stability, and suitable temperature range.

This backlight features a transparent acrylic front paired with a polystyrene (SAN) rear body molding, designed for robustness and clear visibility. The taut band core magnet movement is encased within a compact 26mm diameter barrel, which occupies minimal space behind control panels, ideal for space-constrained installations.

The unit includes a rear zero adjustment screw and receives connections through 6mm tag terminals; a higher specification option with M4 bolt terminals is available for enhanced mechanical security. The black ABS front and behind panel mounting bezels are sold separately, allowing flexible customization according to installation needs.

The backlight provides a dual meter scale with readings from -20 to 3 dB and 0 to 100%, making it versatile for different measurement applications. It can operate reliably in industrial environments with temperatures ranging from -25°C to +55°C.

For user convenience, rear mounting 12V bulb top-lighting assemblies are available to improve display visibility in low-light settings. The backlight panel cut-out requires a 27mm diameter barrel and fixing stud size M2.5 x 10mm, consistent with standard mounting hardware.

Sifam Tinsley backlights are widely used in industries such as industrial automation, electronics manufacturing, laboratory instrumentation, and HVAC systems for visual signal indication and display enhancement.

Calibrated for use with a 3.6kΩ resistor to ensure accurate reference deflection. Transparent acrylic front and polystyrene rear body molding provide durability and clarity. Compact 26mm diameter barrel with taut band core magnet movement saves space behind panels.

Rear zero adjustment screw simplifies calibration adjustments. Connections via 6mm tag terminals with options for higher specification terminals. Black ABS bezels for front and behind panel mounting available separately.

Dual meter scale indicating -20 to 3 dB and 0 to 100% for versatile measurements. Suitable for operating temperatures ranging from - 25°C to +55°C. Optional 12V bulb top-lighting assemblies enhance visibility in dark environments.

Explore the full range of Display Backlighting components and modules at EnvMart for industrial and commercial electronic applications.