What SJE-Rhombus does

SJE-Rhombus designs and manufactures liquid level control systems for water, wastewater, and sewage applications, serving residential, commercial, municipal, industrial, and agricultural markets globally. Founded in 1975 and headquartered in Detroit Lakes, Minnesota, the company operates as a brand of privately held SJE Inc., which encompasses 12 brands across 16 US locations. Its product portfolio centers on pump control panels with proprietary embedded circuit board technology (Build-A-Panel, EZ Series, Installer Friendly Series, NEX Series, ACCEL Panel Program, Build-A-Panel PLUS), supplemented by float switches (PumpMaster, AmpMaster, VerticalMaster, MicroMaster families), alarm systems (Xpert Alert, Tank Alert), continuous level monitoring sensors (C-Level, Sub-X), and pressure controls (H2O Drive, WellZone). Connected products include SJE Panel Link cellular cloud monitoring with email/SMS alerts, EZ Series In-Site CL panels with Bluetooth, and Xpert Alert WiFi/RF alarms. The company manufactures 70,000+ control panels per year across multiple UL 508A and UL 698A certified panel shops in the USA, with additional manufacturing in China and a regional office in Almelo, Netherlands.

The business model is predominantly hardware sales through a multi-tier channel: a US distributor network accessed via website-based locator tools, regional manufacturers' representatives (StreamKey for Midwest/Appalachian markets and Hart, Travers & Associates for Northern Illinois/Northwest Indiana), and international distributors spanning Canada, France, Germany, Italy, Spain, and other countries. Pricing combines published catalog pricing with quote-based custom work, backed by an industry-leading 5-year limited warranty. Custom engineered solutions (design, programming, assembly, testing, commissioning) are delivered through the Engineered Custom Control Solutions division and the ACCEL accelerated program offering same-day quotes, 24-hour submittals, and 10-day build-to-ship. Recent growth has been driven by an active acquisition program (eight deals since 2021, including Anchor Scientific in May 2026) and product expansion into IoT/cloud-connected monitoring.

Name

SJE-Rhombus

Legal name

SJE Inc.

Website

https://sjerhombus.com

Company type

Private

Founded year

1975

Operating status

Operating

Headcount range

501–1,000 employees

Short description

SJE-Rhombus designs and manufactures liquid level control systems, including pump control panels, float switches, alarms, and IoT-enabled monitoring, for water and wastewater applications across residential, commercial, municipal, industrial, and agricultural markets globally.

Ownership category

akta.pro rank

Headquarters

HQ city

Detroit Lakes

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Control Panels Sales: Manufacture and sale of pump control panels including Build-A-Panel, EZ Series, NEX Series, Installer Friendly Series, and custom engineered solutions. Products are sold through distributors and manufacturer representatives.
2. Float Switches and Sensors: Sale of pump switches, control switches, level sensors, and monitoring devices for water and wastewater applications
3. Alarm Systems: Sale of tank alarm systems including indoor, outdoor, WiFi, and RF alarm products for residential, commercial, and municipal applications
4. Custom Engineered Solutions: Custom control panel engineering, fabrication, programming, and commissioning services for complex applications including lift stations and wastewater treatment

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels5 records

Core offering

SJE-Rhombus is a brand of SJE Inc. that designs and manufactures pump control panels, alarm systems, level sensors, and float switches for water and wastewater applications. The company supplies pre-engineered and custom-engineered control solutions for lift stations, grinder systems, pressure boosting, and water well applications. Its products are deployed across residential, commercial, municipal, industrial, and agricultural environments, with the brand operating alongside 11 other SJE Inc. brands in 16 U.S. locations.

Product overview

SJE Rhombus offers a comprehensive portfolio of liquid level control and monitoring products for the water, wastewater, and sewage industries. The product line centers on pump control panels (Build-A-Panel, EZ Series, Installer Friendly Series, NEX Series), supplemented by alarm systems (Xpert Alert, Tank Alert families), level monitoring solutions (C-Level sensors, Sub-X transmitters, Level Monitor CL), float switches (PumpMaster, AmpMaster, VerticalMaster, MicroMaster, HiTempMaster lines), pressure controls (H2O Drive, WellZone, Select Start), grinder products (VARIOspeed), and engineered custom solutions (ACCEL program, Build-A-Panel PLUS, SJE Panel Link remote monitoring, Rapid Set systems). Products serve residential, commercial, municipal, industrial, and agricultural markets. The company holds multiple certifications including UL/cUL listings and CE marking, backed by an industry-leading five-year limited warranty on most catalog products. In 2025, SJE expanded its portfolio through acquisition of Anchor Scientific (float switches and controllers).

Differentiator

Problem solved

Functional benefit

Brands

• Build-A-Panel™: Customer-specific product flexibility without the cost of customization for pump control panels
• EZ Series®
• Installer Friendly Series®
• NEX Series®
• ACCEL® Panel Program
• Xpert Alert®
• Tank Alert®
• H2O Drive®
• WellZone®
• VARIOspeed®
• C-Level™ Sensor
• Sub-X™ Transmitter
• EZconnex®
• SJE Panel Link™

Products and services

• Build-A-Panel Control Panels
• EZ Series Pump Control Panels
• Installer Friendly Series Control Panels
• NEX Series Pump Control Panels
• VARIOspeed Grinder Control Panels
• Variable Speed Pressure Controls
• H2O Drive Constant Pressure Control
• WellZone Pressure Controllers
• Tank Alert Alarm Systems
• Xpert Alert Indoor Alarm System
• C-Level Continuous Level Sensor System Continuous level monitoring sensor system that measures tank level in real time. Used in wastewater, stormwater, and industrial tank applications to enable accurate level control.
• SJE PumpMaster and Float Switches
• EZconnex Float Connection System Plug-in float connection system that simplifies installation of multiple float switches in a tank. Targeted at contractors installing lift station controls.
• SJE Panel Link Remote Monitoring
• Rapid Set Lift Station System Pre-engineered lift station package combining a basin, pumps, controls, and accessories for fast deployment in commercial and municipal applications.
• Build-A-Panel PLUS Engineered Panels Higher-tier pre-engineered control panels with expanded features and customization for more complex lift station and pump control applications.
• Engineered Custom Control Solutions Bespoke engineering and panel-building service for non-standard pump, level, and process control applications. Targeted at engineers and end users with unique specifications.
• ACCEL Panel Program Accelerated panel build and shipping program for time-sensitive pump control orders.
• Anchor Scientific Process Controls Process and pump control product line integrated into the SJE-Rhombus offering following the integration of the Anchor Scientific product line, serving industrial process applications.

Quantifiable outcome

• Industry-leading 5-year warranty on most catalog products (longest in industry)
• +1 more outcomes

Named customers2 records

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature5 records

Partnerships

Three partnerships are on record, tiered core.

• Anchor ScientificcoreStrategic or Co-development Partner · 18 May 2026Acquired Anchor Scientific, a Minnesota-based manufacturer of float switches and controllers for water and wastewater applications. Founded in 1965, Anchor Scientific serves municipal, commercial, and residential markets with panels, alarms, and junction boxes. This was SJE's eighth acquisition since 2021, integrating Anchor Scientific into the Controls and Level Sensing Technology division.
• StreamKeycoreChannel Partner/ Reseller/ DistributorAppointed as manufacturers' representative agency for key Midwest and Appalachian markets including Indiana (excluding Lake and Porter Counties), Kentucky, Ohio, West Virginia, and Western Pennsylvania. StreamKey brings expertise in water and wastewater industry solutions and strong regional relationships to support SJE Rhombus expansion.
• Hart, Travers & Associates, Inc. (HTA)coreChannel Partner/ Reseller/ DistributorAppointed as manufacturers' representative for Northern Illinois and Indiana's Lake and Porter counties. HTA supports SJE Rhombus product sales, training, and customer support. HTA has a 70-year history in plumbing and represents multiple industry brands.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Pentair: Large water solutions company offering pumps, controls, and treatment across residential and municipal markets; overlaps SJE in water management but with a far broader portfolio.
• Grundfos: Global pump maker with integrated controls and IoT monitoring for water/wastewater, competing with SJE's controls and connected-monitoring ambitions at greater scale.
• Franklin Electric: Global manufacturer of water pumps, motors, and pump control/drive systems (SubDrive, MonoDrive). Directly overlaps SJE in pump controls and water-well/pressure applications but as part of a much larger pump-focused portfolio.
• Xylem: Major water-technology company (Flygt, Sensus) spanning pumps, controls, sensing, and smart-water monitoring, overlapping SJE across level sensing and cloud monitoring but as a diversified incumbent.

Direct peers

• Orenco Systems: Manufactures onsite/decentralized wastewater control panels, float switches, and pump packages for residential and municipal markets, closely matching SJE's core level-control and control-panel offering.
• Metropolitan Industries: Builds pump control panels, lift-station controls, and remote monitoring for water/wastewater applications, directly comparable to SJE's engineered control solutions and Panel Link monitoring.
• MultiTrode (Xylem): Provides pump station controllers and level-sensing systems for municipal wastewater, overlapping directly with SJE's pump controllers and continuous level monitoring products.
• Zoeller Company: Manufactures pumps plus float switches, alarms, and control panels for sump/sewage/effluent applications, competing with SJE's Tank Alert alarms and float-switch lines in residential and commercial markets.
• Liberty Pumps: Makes sewage/effluent pumps together with alarms and control panels for residential and commercial water management, overlapping SJE's alarm and pump-control product families.

Others

• SJE competitor SymCom / Littelfuse: Produces pump protection relays and motor control devices (SymCom/MotorSaver) used in water-well and pump panels, an adjacent component supplier to the same pump-control ecosystem SJE serves.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/sje-rhombus-104591946253383
• LinkedInlinkedin.com/company/sje-rhombus

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SJE-Rhombus