Philips Lighting 537183 14T8/48-835/IF20/MAScon IA 10/1

It uses a G13 medium bi-pin base and measures 48 inches long, so it seats in a standard 4-foot T8 lampholder. Philips lists it as a quick upgrade to smart lighting with an existing electronic ballast, so it runs off the ballast already in the fixture rather than requiring a line-voltage rewire. Lamp current draw is 130 to 240 mA.

Dimming is wireless, not 0-10V or line-voltage. The lamp carries built-in 2.4GHz mesh wireless communication and is controlled through Interact Pro, Interact Office/Industry, or an approved third-party system. If your building runs wall dimmers or a wired control layer, this lamp won't respond to them.

Color code 835 means 3500K correlated color temperature, the neutral white commonly used in offices and schools. It won't match a 4100K or 5000K run, and mixing them in the same space is visible. Color rendering index is 82, with color consistency held under 6 SDCM so tube-to-tube variation stays tight across a re-lamp.

The 537183 produces 2000 initial lumens at 14 watts rated, an efficacy of 142.86 lm/W. A standard 32W fluorescent T8 typically runs in the 2800 to 3000 lumen range, so per tube you get less raw output but far less wattage. In multi-lamp troffers with controls in place, Philips cites up to 85 percent energy saving versus fluorescent.

Ambient operating range is -20 C to 45 C, so a cold garage or unheated warehouse is within spec, and Philips lists parking, industry and warehouse among its applications. Max case temperature is 40 C, so keep it out of tightly enclosed, heat-trapping housings. Storage tolerance is -40 C to 65 C.

Rated voltage covers 120-277V plus 347V, at 50 to 60 Hz, so it suits both standard US commercial circuits and 347V systems common in Canadian buildings. Power factor is 0.9.

It is listed as DLC Standard, which is the qualification most utility programs require for commercial lighting incentives, and it is flagged as an energy saving product. It is also EU RoHS compliant. Confirm the specific rebate tier with your utility, since programs differ on whether they pay on DLC Standard or only DLC Premium.

Rated life is 50,000 hours with a 50,000 switching cycle rating, so frequent on-off from occupancy sensors is not a life-shortening problem the way it is with fluorescent. Start time is half a second to full output, and lumen maintenance at end of rated life is 70 percent of initial.

It is a 4-foot, 14 watt T8 LED-style replacement lamp with integrated wireless control, ordered as Philips manufacturer part number 537183. The code breaks down as 14 watts, T8 tube, 48 inches, 835 for 3500K, and MAScon for the wireless connected version. If you want a plain non-connected tube or a different color temperature, you need a different part number.

Nominal beam angle is 160 degrees, so output is broadly spread but not the full 360 degrees a glass fluorescent tube throws. In an open troffer that is fine since the light aims down; in an indirect fixture that relies on uplight bounced off the reflector, expect a different distribution than the fluorescent it replaces.