Ei Electronics Ei650i Photoelectric Smoke Detector Wireless, Battery 3V Lithium, White

The ei electronics Ei650iW is a standalone photoelectric smoke detector with a sealed lithium battery designed to provide long-term smoke monitoring in homes and small commercial premises. It uses an optical sensing chamber to detect visible combustion products and includes wireless interconnect capability so that multiple detectors can alert together when one unit senses smoke. The unit is supplied in white and is intended for ceiling or high wall mounting to give early warning of smouldering or flaming fires.

Advantages

The detector integrates a sealed long-life lithium power source with a compact photoelectric sensor to minimise maintenance and ensure continuous operation without routine battery changes. Wireless interconnect simplifies installation across multiple rooms by removing the need for wiring between units, and the device provides a clear audible alarm and simple mounting for straightforward deployment in residential and small commercial settings.

Suitable for

• Private homes and apartments
• Small offices and retail premises
• Hallways, bedrooms and common living areas
• Properties where hard-wired interconnection is impractical

When it may not be suitable

The detector is intended for indoor use and may not be suitable for locations exposed to excessive dust, steam or grease where false alarms are more likely. It is not designed for outdoor installation or for environments requiring specialised industrial-grade detection.

Key specifications

• Sensor type: Photoelectric (optical) smoke detection suitable for smouldering and flaming fires
• Power source: Sealed long-life lithium battery providing multi-year operation without replacement
• Interconnect: Wireless linking between units to trigger simultaneous alarms
• Alarm output: Built-in high-decibel piezoelectric sounder suitable for residential premises
• Mounting: Ceiling or high wall mount using supplied fixing base
• Operating environment: Indoor use; designed for typical household ambient temperature range

How to use

Fit the detector to a ceiling or high on a wall following the supplied mounting instructions, keeping it clear of cooking appliances, bathrooms and direct airflow from vents. Pair units using the wireless interconnect procedure at installation and perform the device self-test to confirm sensor and alarm operation. Carry out monthly tests to verify ongoing function. Monitor the detector for the manufacturer’s end-of-life indication and replace the unit when that indication is given.

What to consider before purchase

• Required coverage: number of detectors needed for each sleeping area, floor and hallway
• Installation environment: avoid areas with excessive dust, steam or grease
• Preference for wireless interconnect versus hard-wired systems
• End-of-life replacement planning since the battery is sealed

Usage recommendations

Install detectors in every sleeping area, outside each separate sleeping area and on every level of the building for comprehensive coverage. Avoid mounting directly above cookers, bathrooms or air vents that could disrupt smoke flow. Test linked units after installation and monthly thereafter to confirm wireless interconnect operation, and replace the detector at the indicated end of life to maintain protection.