--- product_id: 59975043 title: "OSMLP-3ERN Miniature Digital Panel Meter RED NEG Backlight 3 1/2 Digit LCD Display 4-20mA Loop Powered Eng Units °F °C PSI % Decimal Points 3 Position Adjustable Span and Offset" brand: "open source meter" price: "£0.37" currency: GBP in_stock: false url: https://www.desertcart.co.uk/products/59975043-osmlp-3ern-miniature-digital-panel-meter-red-neg-backlight-3 store_origin: GB region: United Kingdom --- # ±0.1% accuracy Red negative backlight 3-position decimal control OSMLP-3ERN Miniature Digital Panel Meter RED NEG Backlight 3 1/2 Digit LCD Display 4-20mA Loop Powered Eng Units °F °C PSI % Decimal Points 3 Position Adjustable Span and Offset **Brand:** open source meter **Price:** £0.37 **Availability:** ❌ Out of Stock ## Summary > 🔴 Precision meets style — see your data in a whole new light! ## Quick Answers - **What is this?** OSMLP-3ERN Miniature Digital Panel Meter RED NEG Backlight 3 1/2 Digit LCD Display 4-20mA Loop Powered Eng Units °F °C PSI % Decimal Points 3 Position Adjustable Span and Offset by open source meter - **How much does it cost?** £0.37 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/59975043-osmlp-3ern-miniature-digital-panel-meter-red-neg-backlight-3) ## Best For - open source meter enthusiasts ## Why This Product - Trusted open source meter brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Seamless Loop Power:** Powered directly by 4-20mA loops for hassle-free integration and reduced wiring complexity. - • **Customizable Readout:** Tailor your data with 3-position adjustable decimal points and selectable engineering units like °F, °C, PSI, and more. - • **Versatile Annunciators:** Switch effortlessly between multiple units (V, A, KW, PF) to match your precise monitoring needs. - • **Precision You Can Trust:** Experience ultra-accurate readings with ±0.1% full scale accuracy plus minimal count error. - • **Vibrant Red Negative Display:** Stand out with a sharp 0.45" red negative LCD that ensures clear visibility in any lighting. ## Overview The OSMLP-3ERN is a compact, loop-powered digital panel meter featuring a crisp 3 1/2 digit red negative LCD display. It offers ±0.1% accuracy, selectable engineering units, and adjustable decimal points, making it the perfect tool for precise, customizable industrial monitoring. ## Description Model OSMLP-3ERN - Miniature loop powered 4-20mA digital panel meter with Red Negative backlight, powered from a 35mA source at 24V DC. OSMLP panel meters are manufactured using mature technologies for high quality, compact, reliable, affordable instrumentation to be utilized in industrial, commercial and OEM environments. Each unit has a 3.5 digit LCD display with 0.45" high digits and a shorting block switch selectable decimal point. All OSMLP digital panel meters have user selectable engineering units °F, °C, PSI, % and Adjustable Span (gain) and Zero (offset). The unit has a 0 to 50 degree C operating temperature, -10 to 70 degree C storage temperature. Construction: plastic foundation with clear viewing window. (Panel gasket and mounting clip included). Measures 2.54" length by 1.62" width by 0.988" height. Panel Cutout 2.4” length by 1.0” height. ## Features - 4-20mA Input - ±(0.1% of full scale + 2 count) Accuracy - Annunciators: °F, °C, PSI, %, user selectable or V, A, KW, PF - 0.45" (11.4 mm) 7 segment LCD, Color Red Negative - Decimal Points: 3 position, user select-able ## Images ![OSMLP-3ERN Miniature Digital Panel Meter RED NEG Backlight 3 1/2 Digit LCD Display 4-20mA Loop Powered Eng Units °F °C PSI % Decimal Points 3 Position Adjustable Span and Offset - Image 1](https://m.media-amazon.com/images/I/51elaVqmcxL.jpg) ![OSMLP-3ERN Miniature Digital Panel Meter RED NEG Backlight 3 1/2 Digit LCD Display 4-20mA Loop Powered Eng Units °F °C PSI % Decimal Points 3 Position Adjustable Span and Offset - Image 2](https://m.media-amazon.com/images/I/71tABM4O-CL.jpg) ![OSMLP-3ERN Miniature Digital Panel Meter RED NEG Backlight 3 1/2 Digit LCD Display 4-20mA Loop Powered Eng Units °F °C PSI % Decimal Points 3 Position Adjustable Span and Offset - Image 3](https://m.media-amazon.com/images/I/71IGFrG7bhL.jpg) ![OSMLP-3ERN Miniature Digital Panel Meter RED NEG Backlight 3 1/2 Digit LCD Display 4-20mA Loop Powered Eng Units °F °C PSI % Decimal Points 3 Position Adjustable Span and Offset - Image 4](https://m.media-amazon.com/images/I/61YgbsW6qRL.jpg) ![OSMLP-3ERN Miniature Digital Panel Meter RED NEG Backlight 3 1/2 Digit LCD Display 4-20mA Loop Powered Eng Units °F °C PSI % Decimal Points 3 Position Adjustable Span and Offset - Image 5](https://m.media-amazon.com/images/I/61L8KqmGWAL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/59975043-osmlp-3ern-miniature-digital-panel-meter-red-neg-backlight-3](https://www.desertcart.co.uk/products/59975043-osmlp-3ern-miniature-digital-panel-meter-red-neg-backlight-3) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-15*