Protect your home from invisible danger with the smart HEIMAN CO detector with the TUYA/SMART LIFE app. Thanks to the electrochemical sensor, instant Wi‑Fi alerts, and a loud ≥85 dB alarm, you get reliable warnings in time. It also features digital temperature compensation, a Hush mode for temporary silencing, and long battery life.
Accurate electrochemical CO detection

Accurate electrochemical CO detection

A modern electrochemical sensor quickly and reliably detects dangerous concentrations of carbon monoxide and promptly triggers audible and visual alarms.

Smart real‑time Wi‑Fi alerts

Smart real‑time Wi‑Fi alerts

With 2.4 GHz Wi‑Fi connectivity and the Tuya/Smart Life app, you receive instant notifications on your phone, wherever you are.

Loud alarm and Hush mode

Loud alarm and Hush mode

The built‑in ≥85 dB buzzer reliably alerts you. Hush mode temporarily silences nuisance alarms without compromising safety.

The HEIMAN WS‑720ES is an intelligent carbon monoxide detector for a safer home. Advanced electrochemical technology ensures precise CO detection and fast response, while Wi‑Fi connectivity (2.4 GHz) with the Tuya/Smart Life app delivers instant alerts to your phone—at home or away.

Thanks to digital temperature compensation, it measures reliably across a wide range of environments (−10 to +40 °C). Hush mode lets you temporarily mute unwanted alarms, while keeping safety first. The compact, elegant design suits wall or ceiling mounting and blends into your interior.

Key benefits:
- Instant alerts on your phone via Wi‑Fi and the Tuya/Smart Life app
- High‑precision detection with an electrochemical sensor (service life up to 10 years)
- Loud ≥85 dB alarm and clear visual indication
- Long battery life (up to 5 years) with low‑battery warning
- Easy installation on wall or ceiling, modern design

Specifications

Manufacturer
Heiman
Manufacturer code
WS-720ES
Operating voltage
DC 3 V (2× alkaline AA LR6 batteries)
Sensor type
Electrochemical carbon monoxide sensor
Alarm signal
Audible and visual
Sensor lifespan
Up to 10 years
Operating temperature
−10 °C to +40 °C
Operating humidity
0% to 95% RH (non-condensing)
Sound level
≥85 dB @ 3 m
Alarm sensitivity
30 ppm (120 min); 50 ppm (60–90 min); 100 ppm (10–40 min); 300 ppm (3 min)
Warm‑up time
Approximately 100 s
Communication protocol
Wi‑Fi 2.4 GHz
Wireless range
Within Wi‑Fi network coverage
Mounting method
Wall or ceiling
Compliance
EN 50291-1:2018
Battery life
Up to 5 years
Package contents
Detector, mounting bracket, 2× AA batteries, 2× screws, 2× wall plugs, manual

intelligent carbon monoxide detector heiman tuya wifi

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28,90 €