Heiman WS-720ES WiFi Smart Carbon Monoxide Detector | Official Product Documentation
Product Overview
The heiman WS-720ES is a next-generation wifi carbon monoxide detector engineered for modern smart homes, rental properties, and light commercial spaces. Powered by a precision electrochemical co sensor and direct 2.4GHz WiFi connectivity, this smart CO alarm delivers real-time gas monitoring, instant mobile alerts, and cloud-backed incident logging without requiring additional hubs or complex wiring. Certified to CE, UKCA, and RoHS standards, the WS-720ES provides reliable, life-saving carbon monoxide detection that integrates seamlessly into daily smart home routines while maintaining strict compliance with European and UK fire & gas safety regulations.
Core Communication Capabilities & IoT Architecture
The WS-720ES is built around a secure, cloud-native IoT architecture optimized for continuous environmental monitoring and rapid emergency notification. Unlike legacy standalone co alarms, this WiFi-connected co detector operates as a fully autonomous smart node within your home network.
- Direct 2.4GHz WiFi Integration: Connects natively to 802.11 b/g/n 2.4GHz routers using WPA2/WPA3 encryption. No proprietary gateway or base station is required, simplifying deployment and reducing hardware costs.
- Real-Time Cloud Alerting & Remote Monitoring: Upon detecting unsafe CO levels, the device triggers an encrypted push notification to the Heiman mobile app (or compatible smart home ecosystem) within <3 seconds, regardless of user location. Cloud logs for compliance auditing and trend analysis.
- Cross-Platform Interoperability: The WS-720ES communicates via MQTT-based cloud messaging, enabling native or bridged integration with major smart home platforms.
- Fail-Safe Local Operation: WiFi or internet outages do not compromise life safety. The onboard 85+ dB siren and LED strobe activate independently of network connectivity, ensuring immediate occupant warning.
Core Functions & Authoritative Technical Verification
The WS-720ES combines laboratory-grade sensing with enterprise-level cloud verification, delivering accuracy, reliability, and regulatory compliance in a single compact enclosure.
Verification Clause: All CO detection thresholds, acoustic output, radio transmission power, and software security protocols have been independently validated by TÜV/SGS-accredited laboratories. Compliance documentation aligns with EU Regulation (EU) 2014/53/EU Article 17 (CE marking) and UK Product Safety & Metrology Act 2022 guidance. RoHS conformity excludes restricted substances per Directive 2011/65/EU & Amendment (EU) 2015/863.
Technical Specifications
Note: Performance metrics are based on factory calibration under standard test conditions. Always reference the official WS-720ES Engineering Datasheet for commissioning and regulatory submission.
Application Scenarios & Installation Guidelines
Recommended Deployment Zones
The WS-720ES WiFi CO detector is engineered for residential and light-commercial environments where fuel-burning appliances or ventilation deficiencies pose silent poisoning risks:
- Attached garages, boiler rooms, furnace closets, and water heater areas
- Multi-story homes, apartments, and short-term rental properties
- Student dormitories, senior living facilities, and co-working spaces
- RVs, tiny homes, and prefab modular units with integrated heating
Installation & Network Configuration
- Mounting Position: Wall or ceiling installation per EN 50291-1 guidelines. Ideal height: 1.2–1.8m above floor level or 30–40cm below ceiling. Avoid dead-air corners, direct HVAC vents, or within 1m of windows/doors.
- Network Setup: Ensure a stable 2.4GHz SSID with ≤20m range to the router during initial pairing. The device supports AP/SoftAP mode for frictionless onboarding via the companion app.
- Zone Grouping: Name devices by location (e.g., "Master Bedroom CO", "Garage CO") in the app for precise alert routing. Cloud dashboard supports multi-device floor mapping.
- Maintenance: Test monthly via app or physical button. Wipe sensor housing quarterly. Replace battery upon low-power alert . Do not paint or seal ventilation slots.
Frequently Asked Questions (FAQ)
Q1: Does the WS-720ES work with 5GHz WiFi networks?
A: No. The device operates exclusively on 2.4GHz WiFi (802.11 b/g/n) to ensure broader router compatibility, superior wall penetration, and lower power consumption. Most modern dual-band routers broadcast both frequencies simultaneously.
Q2: What happens if my internet or WiFi goes offline during a CO leak?
A: Life safety is never compromised by network status. The WS-720ES triggers its 85 dB local siren and visual strobe immediately upon detecting unsafe CO levels. App alerts will be queued and delivered once connectivity is restored.
Q3: Is this CO detector compatible with Alexa, Google Home, or Apple HomeKit?
A: The WS-720ES connects natively to the Heiman Smart Life/Tuya ecosystem, which supports official skill integration for Amazon Alexa and Google Assistant，Apple HomeKit.
Q4: How accurate is the electrochemical sensor over time?
A: Electrochemical cells maintain ±10% accuracy across their operational lifespan. The WS-720ES includes automated drift compensation and pre-calibration verification at factory. End-of-life warnings trigger at ~10 years, ensuring replacement before degradation affects response thresholds.
Q5: Are the CE/UKCA certifications recognized for property compliance or insurance?
A: Yes. Certification to EN 50291-1:2018+A1:2021 meets EU and UK statutory requirements for residential CO monitoring. Many insurers and landlord compliance schemes accept EN 50291-certified devices as valid proof of gas safety mitigation. Always verify with local building authorities or policy providers.
Brand Endorsement
Heiman is a globally trusted innovator in IoT life-safety and smart environmental monitoring, with over two decades of engineering excellence in sensor fusion, cloud security, and wireless emergency response systems. Every WS-720ES unit undergoes 100% factory functional testing, EMI/RF immunity validation, and accelerated aging simulation before shipment. Heiman’s commitment to transparent compliance, developer-friendly APIs, and user-centric design has positioned the brand as a preferred partner for smart home integrators, property managers, and fire safety professionals across 60+ countries.
References & Authoritative Standard Sources
