Case Study
SIMMM Engineering / Natural Cool
Smart Misting Systems
Iottive developed a smartphone app for SIMMM Engineering’s Natural Cool systems, enabling remote control, real-time monitoring, and multi-device management via BLE. It improved efficiency, reduced downtime with predictive alerts, and supported global use with multi-language features.
SIMMM Engineering / Natural Cool
Tech Partnership
Smart Misting
6 Months
- Smartphone app for Natural Cool systems
- Remote control & real-time BLE monitoring
- Improved efficiency & reduced downtime
- Multi-language global support
Key Outcomes
Delivered the first dedicated smartphone app for professional misting systems, giving SIMMM a competitive differentiator across its Natural Cool product line.
Enabled global market reach with multi-language support across six languages (English, Italian, French, Spanish, German, Portuguese), serving customers on five continents.
Built a single-app architecture capable of discovering, connecting to, and managing an unlimited number of misting units—each with independent presets and profiles—from one smart phone.
The Challenge
Before partnering with Iottive, SIMMM Engineering was facing several issues:
From Hardware-Only to Smartphone Control
SIMMM’s Lucky3 control panel—their third-generation proprietary microcontroller—already supported cycling timers, weekly programs, and Modbus integration for building automation. But all configuration required physical interaction with the panel or a radio remote. Customers increasingly expected smartphone-based control, and SIMMM needed a mobile interface that could expose the full feature set of the Lucky3 without simplifying it into a consumer toy.
Reliable BLE Communication in Demanding Environments
Misting systems operate in restaurants, hotel terraces, airport terminals, industrial plants, and outdoor venues. These environments produce significant radio interference from commercial Wi-Fi networks, kitchen equipment, HVAC systems, and metal structures. The BLE connection between the app and the Lucky3 panel had to maintain reliable bidirectional communication—sending commands and receiving sensor telemetry—despite these conditions.
One App for Multiple Product Variants
The Natural Cool line includes four distinct pump models—Spray Advance, Profy Advance, Misty Advance, and Foggy Advance—each with different capacities, form factors, and feature configurations. A facility might run a compact Profy Advance on a small terrace and a professional Foggy Advance (the first vertical misting pump on the market) in an industrial hall. The app needed to identify each model, adapt its interface to the available features, and let operators switch between units without confusion.
Multi-Language Localization for International Markets
SIMMM distributes Natural Cool systems across all five continents, with particularly strong demand in Southern Europe, the Middle East, and Southeast Asia. The app required full localization in six languages from launch—not just translated strings, but culturally appropriate units, date formats, and terminology that professional installers and facility managers would recognize.
Our Solution
Iottive delivered a complete AIoT solution under a full-cycle product development model.
Bluetooth & IoT Expertise
Iottive designed and implemented a custom BLE protocol layer to communicate with the Lucky3 panel’s integrated Bluetooth module. The protocol handles device discovery, secure pairing, and persistent connections, with automatic reconnection logic to recover from drops caused by environmental interference. The architecture supports bidirectional data flow: commands from the app to the panel (start/stop, timer settings, threshold values) and real-time telemetry from the panel to the app (temperature, humidity, pump operating hours, alarm states). Multi-device discovery allows a single app instance to scan for, identify, and manage any number of Lucky3-equipped units within BLE range.
Design Thinking Approach
The primary users of Cool App are not software engineers—they are restaurant owners, hotel facility managers, industrial plant operators, and HVAC installers. Iottive applied a preset-based workflow: operators configure a misting profile once (work/pause intervals, temperature minimums, humidity maximums) and save it for instant recall. Alarm notifications surface immediately and use clear, nontechnical language “Water supply low” rather than error codes. The interface groups pump controls, timer configuration, and environmental readings into distinct views, reducing cognitive load during timesensitive adjustments.
Project Planning & Execution
Iottive ran the project using an agile methodology with two-week sprint cycles, coordinating closely with SIMMM’s hardware engineering team in Cinisello Balsamo. Sprint reviews included live BLE testing with physical Lucky3 panels and pump units to validate protocol changes against real hardware. This embedded collaboration ensured that firmware updates on the Lucky3 side and app-side protocol changes stayed synchronized throughout development.
Functionalities Delivered in Mobile Apps
• Remote start/stop control for pumps and fans via BLE
• Cycling timer: programmable work/pause intervals for intermittent nebulization
• Environmental thresholds: configurable temperature minimums and humidity maximums that trigger automatic system adjustments
• Preset management: save, name, and recall unlimited configurations per misting unit
• Real-time alarm push notifications for water shortage, maintenance intervals (oil changes, nozzle cleaning), and system faults
• Multi-unit management: discover, connect, and control unlimited Lucky3-equipped misting units from one app
• Multiple profiles per device for different operating scenarios (daytime vs. evening, summer vs. shoulder season)
• Full localization in six languages: English, Italian, French, Spanish, German, Portuguese
Implementation Highlights
Device Discovery & Pairing
The app performs continuous BLE scanning to detect Lucky3 panels in range, presenting discovered devices with their model identifier (Spray, Profy, Misty, or Foggy Advance) and signal strength. Pairing follows a secure handshake protocol, and the app maintains a registry of previously paired devices for instant reconnection. Connection state is displayed in real time, with clear indicators for paired, connected, and disconnected states.
Edge & Connectivity
The BLE protocol supports full bidirectional communication with the Lucky3 microcontroller. Outbound commands include pump start/stop, fan control, cycling timer parameters, weekly schedule programming, and threshold configuration. Inbound data streams include temperature and humidity readings from connected probes, pump operating hours, maintenance counters, and alarm events. The protocol uses acknowledgment-based messaging to confirm command execution, with retry logic for packets lost in high-interference environments.
Multi-Device Architecture
Cool App’s architecture treats each Lucky3 panel as an independent device instance with its own connection state, configuration history, and preset library. Operators managing a large venue—such as Malpensa Airport or multi-zone hotel terrace—can switch between misting units without disconnecting, and each unit retains its own set of saved profiles. The app imposes no limit on the number of managed devices.
Data Analytics & Visualization
Real-time environmental data from temperature and humidity probes connected to the Lucky3 panel is displayed within the app, giving operators immediate visibility into ambient conditions. Pump and fan lifetime counters track cumulative operating hours, surfacing maintenance needs before failures occur. The AXA pump’s operating parameters—running at 900 rpm, variable flow from 0.5 to 18 l/min, pressures up to 105 Bar—are monitored to ensure the system operates within design specifications.
Dashboard & UX
The main dashboard provides single-tap access to pump controls, cycling timer configuration, weekly scheduling, and alarm status. Presets occupy a dedicated management screen where operators create, edit, duplicate, and delete saved configurations. The cycling timer interface uses visual sliders and numeric inputs to set work and pause durations, with a live preview of the resulting cycle. Weekly scheduling follows a calendar-grid pattern familiar to HVAC professionals, with per-day on/off time slots.
Security & Compliance
BLE connections are secured at the protocol level to prevent unauthorized access to misting equipment. The app collects no personal user data consistent with its privacy policy as published on the Google Play Store and stores all configuration data locally on the device. This zero-data collection architecture simplifies GDPR compliance for SIMMM’s European customer base and eliminates cloud infrastructure dependencies.
Results & Impact
- Established Cool App as the first dedicated misting-system control app on the market, positioning SIMMM ahead of competitors still relying on generic BMS interfaces or manual panel operation.
- Expanded SIMMM’s addressable market through six-language localization, supporting the company’s distribution network across Southern Europe, the Americas, the Middle East, and Asia-Pacific.
- Reduced operational burden for facility managers by enabling remote pump monitoring and control—eliminating the need to physically access equipment installed in elevated, rooftop, or restricted-access locations.
- Decreased unplanned downtime through proactive maintenance alerts. Push notifications for oil changes, nozzle cleaning schedules, and pump operating-hour thresholds allow service teams to schedule maintenance during off-hours rather than responding to failures.
- Improved energy and water efficiency by giving operators precise control over cycling intervals and environmental thresholds, preventing unnecessary misting when ambient temperature or humidity conditions are already within target range.
“When we designed the Lucky3 panel, we knew Bluetooth connectivity would differentiate our product line. But building a professional-grade mobile app that communicates reliably with our microcontroller in the environments where our systems operate—airports, industrial plants, outdoor terraces—required specialized BLE expertise. Iottive delivered an app that our installers and end customers actually use daily. The preset system and maintenance alerts have become selling points in our international tenders. Cool App turned our hardware advantage into a complete digital solution.”
— Gianluca Mariani , SIMMM Engineering
Lessons & Best Practices
BLE in Industrial Environments Demands Protocol-Level Resilience.
Consumer BLE applications can assume clean RF environments. Industrial deployments cannot. Acknowledgment-based messaging, automatic reconnection, and retry logic are not optional—they are baseline requirements when the app controls physical equipment in electrically noisy venues.
Multi-Variant Product Support Requires Abstraction, Not Branching.
Supporting four pump models (Spray, Profy, Misty, Foggy Advance) from a single codebase meant defining a devicecapability abstraction layer. Each Lucky3 panel reports its model and feature set during the handshake, and the app dynamically adapts its interface. This architecture scales to future products without forking the application.
Preset-Based UX Reduces Errors for Non-Technical Operators.
Facility managers and restaurant owners do not want to re-enter temperature thresholds and cycling intervals every time they start their system. Saved presets with descriptive names (“Summer Terrace Evening,” “Warehouse Zone B”) let operators apply validated configurations in one tap, reducing misconfiguration and support calls.
Proactive Maintenance Alerts Shift Service from Reactive to Planned.
Connecting maintenance counters (oil change intervals, nozzle cleaning schedules, cumulative operating hours) to push notifications transforms the service model. Distributors and end customers can schedule maintenance windows proactively, extending equipment life and reducing the cost associated with emergency repairs—particularly important for SIMMM’s AXA pumps, which carry a 10-year guarantee.
Technology
Comprehensive IoT Technology Stack
From devices and connectivity to cloud, apps, and security — we leverage a full-stack IoT ecosystem to build scalable, secure, and future-ready solutions.
iOS (Swift)
Android (Kotlin)
Bluetooth Low Energy (BLE)
Lucky3 microcontroller
temperature/humidity sensor
Push notifications (FCM / APNs)
Multi-language internationalization (i18n) framework
Why Iottive’s the Right Partner
- Deep BLE expertise for industrial IoT: Iottive’s team has delivered BLE protocol implementations for hardware manufacturers across multiple verticals, including RF-critical environments such as factories, commercial kitchens, and outdoor infrastructure.
- Cross-platform mobile development: Native Android (Kotlin) and iOS (Swift) development ensures the Cool App runs at platform-native speed while following OS-specific design conventions, reducing user friction.
- Hardware-software integration for European manufacturers: Iottive has a proven track record of collaborating with European engineering firms to build digital layers on top of industrial products, bridging embedded firmware and end-user mobile experiences.
Next Steps for SIMMM Engineering / Natural Cool
Integrate Cool App with Eddy5 web for browser-based monitoring and control alongside mobile access.
Cloud monitoring: add optional cloud layer to aggregate data from multiple Lucky3 panels for a unified remote view beyond BLE range.
AI predictive maintenance: use ML on pump data to predict wear and recommend maintenance before failures.
BMS integration (Modbus): enable bidirectional integration with building systems for centralised automation dashboards.