Marmonix MLM-1050 (MLM 1050) Split-Probe Lux Meter

The Marmonix MLM-1050 lux meter (MLM 1050) measures illuminance from 0 to 200,000 lx, or 0 to 18,581 fc, through a silicon photodiode sensor that sits on its own coiled cable away from the display. Four ranges step the resolution from 0.1 lx up to 100 lx, with ±3% error up to 999.9 lx and ±4% above that. It also reads ambient temperature from −10 to 65 °C, switches between lux and foot-candles, and has adjustable high and low alarm limits (20,000 lx by default). The datasheet lists part number 7603141 and a 2-year warranty. Find it in the Marmonix lux meters category, and see the environmental and physical measurement guide for related instruments.

MarMonix MLM 1050 Split illuminance meter

The MarMonix MLM 1050 is a professional split-type lux and illuminance meter engineered for accurate measurement of light intensity in industrial, commercial, and residential environments. With a wide measuring range of 0 to 200,000 Lux (0 – 18,581 Fc), it ensures precise evaluation of lighting conditions for factories, offices, schools, hospitals, and traffic routes.

Equipped with a silicon photodiode probe, the MLM 1050 offers ±3% accuracy, fast response time, and reliable readings even in low-light environments (<10 Lux). Its dual-unit display (Lux/Fc), temperature measurement, and adjustable alarm thresholds make it a versatile instrument for engineers, quality control professionals, and safety inspectors.

The MLM 1050 also supports auto-ranging, integral and average data calculations, and data recording with optional Bluetooth communication. Its durable split probe design ensures stability, while the compact form factor allows easy portability in the field.

MarMonix MLM 1050 Key Features

What the MLM-1050 lux meter gives you on a lighting survey:

• Wide measurement range: 0 – 200,000 Lux (0 – 18,581 Fc).

• High accuracy: ±3% (0~999.9 Lux), ±4% (≥1000 Lux).

• Fast response with reliable low-light detection (<10 Lux).

• Dual units: Lux (lx) and Foot-candles (Fc).

• Temperature sensor: –10 °C to +65 °C.

• Auto-ranging with max, min, differential, and integral values.

• Adjustable high/low safety alarms (default 20,000 Lux).

• Durable build with silicon photodiode illuminance probe.

• Automatic power-off with restart capability.

• Supplied with sensor probe, carrying case, batteries, and user manual.

MarMonix MLM 1050 Illuminance Meter Specifications

Buying guide: Read our lux meter buyer’s guide.

Case study: checking a classroom against its lighting target

After a lamp retrofit, a school wants to know whether desks still get enough light. Tables in the European standard EN 12464-1 give maintained illuminance targets per task, for example 300 lx for school classrooms and 500 lx for office reading and writing, so the check needs real numbers, not impressions.

A simple grid survey works well:

• Set the plane: place the sensor flat at desk height, the surface where the task happens.
• Keep out of the light path: hold the display at arm’s length so your body does not shade the sensor.
• Read a grid: take points across the room, including corners and areas between luminaires, and let each reading settle.
• Repeat without daylight: draw the blinds or measure after dark to see what the electric lighting alone delivers.

The average shows whether the room meets the target, while the lowest point reveals dark spots near walls. A separate cable-mounted sensor makes this easier because the reading stays visible while the sensor lies flat. To convert units, 1 fc equals about 10.76 lx.

MLM-1050 lux meter: quick answers

What is the range of the MLM-1050?

0 to 200,000 lx, or 0 to 18,581 fc, in four ranges with resolution from 0.1 lx to 100 lx.

How accurate is the MLM 1050?

±3% from 0 to 999.9 lx and ±4% from 1,000 lx upward, according to the specification table.

Can the MLM-1050 warn me when light is too low or too high?

Yes. You can set high and low alarm thresholds; the high limit is 20,000 lx by default.