Keystone Technologies kt-led42t8-96p2so-8csk-dx2 Sign Tube Led

Product Description

The KEYSTONE TECHNOLOGIES kt-led42t8-96p2so-8csk-dx2 is an 8-foot T8 sign tube LED lamp rated at 42 watts with a 5,300-lumen output and a 6500K daylight color temperature. Designed as a direct ballast bypass lamp, it eliminates the ballast entirely, connecting line voltage directly to the tombstone sockets. The double-sided construction delivers a 180-degree beam angle per side, making it well suited for illuminated sign cabinets and channel letter applications. Rated for temperatures from -22 degrees F to 131 degrees F, this lamp handles demanding indoor and outdoor sign environments. Electricians and sign service technicians install this lamp in commercial and retail sign fixtures.

This lamp is intended for use in illuminated sign boxes, backlit display cabinets, and similar commercial signage applications where a long-format T8 LED source is required. The ballast bypass configuration means the existing ballast circuit must be removed and wired for direct line voltage — making this a permanent retrofit lamp. Its 96-inch length, 1.1-inch diameter, and T8 base format target standard 8-foot sign tombstone socket assemblies. The 120-277 volt input range covers both single-phase and commercial three-phase panel feeds without additional hardware.

Key Features

• 42W ballast bypass design — removes ballast dependency for longer system life
• 5,300 lumens output at 6500K daylight color temperature for bright, high-contrast sign illumination
• Double-sided lamp construction with 180-degree beam angle for even cabinet lighting
• 96-inch (8-foot) T8 form factor, 1.1-inch diameter
• Wide voltage input range: 120 to 277 volts AC
• 50,000+ hour rated average life reduces maintenance intervals on hard-to-reach sign installations
• Temperature rated from -22 degrees F to 131 degrees F for indoor and outdoor sign use

Compatibility

Designed as a ballast bypass retrofit for 8-foot T8 sign cabinet fixtures using standard tombstone sockets. Ballast must be removed and fixture rewired for direct line voltage prior to installation.

Installation Notes

Installation must be performed by a qualified electrician in accordance with the NEC and applicable local codes. Disconnect and de-energize the sign cabinet completely before beginning any wiring work. The existing ballast must be removed and bypassed — do not attempt to run this lamp through an active ballast. Verify tombstone socket type and orientation are compatible with the lamp's base before energizing the circuit.