Multi loggers 2YL-M36-4M 2YL-M37-4M 2YL-M61-4M 2YL-M62-4M 2YL-M90-4M 2YL-M90E-4M 2YL-M91-4M
YL-M61 (Birds Eye View ) (No Background)

2YL-M61-4M Lux Logger

Single channel for luminance measurement. 4 Million readings, measuring range 0 - 40000Lux, operating temperature range -40 to +90ºC, IP65 rated.

Supplied with YoyoLog View software, USB lead and long life battery.

Key Features
• Rugged IP65 housing
• Status LED: - Indicates Alarm - Low Battery Warning
• 2YL-M61-4M: Intergrated Lux sensor

Download Brochure HERE

Dimensions (d x h) 50 x 30mm
Ambient temperature range -40 to +90ºC
Measuring range 0 to 40000 Lux
Accuracy Human Eye Sensitive Lux
Internal sensor resolution 1 lux
Memory capacity (readings) 4 million
Active start
Sensor type Single Channel Luminescence

Humidity Sensor
(Internal and External)

0 to 100% RH/0..1% RH


1 second to 24 hours
IP rating 65
Battery type LITH-12

Battery life (Logging Speed)
1 minute

4 years

10 seconds

230 days
1 second 25 days
Robust, shock proof

Supplied with YoyoLog View software, USB lead and long life battery.

* Using the logger within the extended temperature operating range requires the use of the CR2450HT battery.

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Wall Holder Enables you to securely install the logger onto walls. Complete with tamper-evident lead seal.

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Lead seal kit For Temperatue and Humidity LoggersContains 50 pieces of wire and 50 numbered lead tamper-evident seals for single use. These are manually closed around the wire and can only be released by cutting.


YoyoView Software In addition to the functionalities of the included basic software, the optional upgrade allows more complex analysis of data, creation of charts and calculation of data statistics.
» Three scaleable Y-axes
» Zoom function
» Cursor readings
» Display in spreadsheet format
» Combination of a series of measurements in one chart
» Definition of thresholds
» Y/T-charts (values over time)
» Statistics (min, max, and average values)
» Online metering (display actual values)


Note: Optional Extras include - YoyoView Software, Calibration Certificate, Wall holder, Lead Seal Kit, Probes and Accessories.