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M-35 Microminature DC & Process Meter

With 0.4" high LED digits and detachable screw terminals.

Model M35 low-cost digital panel meter for process signals


  • Fully scalable 3-1/2 digit DC & process meter
  • Accepts 4-20 mA, 0-10V, 0-20 mA or 0-40 mA process signals
  • Accepts ±2V, ±10V or ±200V DC signals
  • Jumper selectable ranges and decimal point
  • Easy scaling via screwdriver
  • Accuracy 0.2% of FS ± 1 digit
  • 24 x 48 mm (0.94" x 1.89") bezel
  • 10 mm (0.4") high LED digits
  • Isolated 10-30 Vdc power
  • Detachable plug-in screw terminals

The M-35 Microminiature Process Meter is the solution when panel space is limited or the size and weight of the indicator must be as small as possible. The bezel measures only 24 x 48 mm (0.94" x 1.89"), yet the height of the red LED digits is a full 10 mm (0.4").

The M-35 is a fully scaleable 3-1/2 digit process meter for DC and process signals. It is powered from 10-30 Vdc, so that it can run off batteries. Power and signal are isolated to 750 Vac to facilitate panel design, with no worries about ground loop errors. A detachable screw terminal connector provides a benefit rarely found on meters of this size.

The 4-20 mA proces signal range and DC voltage ranges from ±2V to ±200V and DC current ranges of 0-20 mA or 0-50 mA are jumper selectable. Zero and span adjustment are easy screwdriver adjustments ar the back of the meter/.

Small size, low weight, and isolated DC power make the M-35 ideal for portable test equipment.

Electrical connections of Model M35 low-cost digital process meter
Removable screw terminal of Model M35 low-cost digital process meter

The above diagram for a typical pressure monitoring / manometer application shows how simple the M-35 is to connect. The same DC source powers the transducer and meter. Only three field wires are required. 

A removable screw terminal is standard. The connector pin assignments as well as the zero and span adjustments are clearly labeled on the back of the meter.

Signal ranges 4-20 mA, 10-50 mA, 0-10V, 0-200V
Input resistance 181Ω, 68Ω, 188 kΩ, 940 kΩ
Scaling method Zero & span potentiometers
A/D conversion Dual slope integration
Accuracy ±0.2% of range
Number of digits 3-1/2
Display range ±1999
Display type Red LED
Digit height 10 mm (0.39")
Decimal point selection Plug-in jumpers behind front panel
Signal isolation 750 Vac
Power to meter 10-30 Vdc, 0.6 W
Bezel dimensions 24 x 48 mm (0.94" x 1.89"), H x W
Panel cutout 22.5 x 45 mm (0.89" x 1.77"), H x W
Depth behind panel 68 mm (2.68") including connector
Electrical connections Four screw terminals, detachable connector
Weight 60 g (2 oz)
Operating temperature -20°C to 60°C (-4°F to 140°F)
Storage temperature -40°C to 80°C (-40°F to 176°F)
For applications assistance, phone 714-434-6131 ext. 104, or email
Mechanical specifications of Model M35 low-cost digital panel meter for process signals
For applications assistance, phone 714-434-6131 ext. 104, or email
Ordering Guide
Use the table below for pricing. Prices are in US dollars and do not include shipping or duty charges (export sales). Please see our explanations and limitations applicable to pricing and online orders. Prices shown are in US Dollars and are Laurel's manufacturer's suggested retail price (MSRP) in the USA. Orders are processed manually, not directly by our shopping cart system. You don't have to supply credit card information when placing an online order.

North American Orders. Laurel does not sell factory-direct in the USA or Canada. Online sales orders are filled through distribution. During the ordering process, you will have the chance to select an authorized Laurel distributor, or you can ask Laurel to refer you to a distributor. The distributor will then contact you to quote shipping, tax and duty (where applicable), and arrange for payment.

International Orders. If your ship-to address indicates that you are outside of the USA or Canada and Laurel has a distributor in your country, we will forward your order to that distributor for follow-up. If Laurel does not have a distributor in your country, we will email you an order acknowledgment and a pro forma invoice which states the product price, shipping charges, and wire transfer information, which includes a $25 bank wire transfer fee.

Questions about your order? Please email your distributor or
Option Board M-35  Microminiature Process Meter $165
Model number M-35
Price per model $165
Quantity 1
Extended price $165
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