ML03 Battery‑Free Wireless Doorbell—Self‑Generating, Eco‑Friendly

Self‑Powered Transmitter

• No Battery Required – Press the button to generate electricity; no batteries ever needed

• Zero Standby Power – Consumes no power when idle

• Nessun cablaggio – Completely wireless installation, place anywhere

• Ultra‑Compact Size – 68 × 34 × 17 mm, lightweight and discreet

• Durable – Designed for long‑term use with no consumables

Plug‑In Receiver – Multiple Options

• Universal Plug Compatibility – Available with US, UK, or EU plug standards

• Simple Installation – Just plug into any standard AC 110‑240V outlet

• Compact Design – 86 × 52 × 22 mm, slim and unobtrusive

• Ready to Use – No setup or pairing required out of the box

Flexible Pairing Modes

• 1‑to‑2 Pairing – One transmitter can ring two receivers simultaneously – ideal for multi‑floor homes or large spaces

• 2‑to‑1 Pairing – Two transmitters can ring one receiver – perfect for front and back doors

• Easy Setup – Simple pairing process, no complex programming

Wireless Performance

• Reliable Frequency – 433.92MHz with OOK modulation

• Long Range – 50‑70 meters open area; works through walls

• Interference‑Resistant – Stable signal in typical home environments

Eco‑Friendly & Cost‑Saving

• No Batteries to Replace – Eliminates battery waste and replacement cost

• Low Environmental Impact – Self‑generating technology reduces waste

• Energy Efficient – Receiver uses minimal power (AC powered)

Applications

• Homes, apartments, villas

• Offices, shops, small businesses

• Multi‑floor buildings

• Front and back door installations

• Elderly care facilities

• Any location where battery replacement is inconvenient