SR-S11 PIR motion-activated voice announcer

Motion Sensor Voice Announcer – PIR Activated, 100dB, Rechargeable Battery

PIR motion sensor voice announcer with rechargeable lithium battery. Triggers customizable MP3 alerts within 0‑5m, 100dB output, 8‑level volume. Ideal for stores, gas stations, and service areas

1. PIR Motion Activated – Instant Voice Trigger
   Detects human presence within 0‑5 meters and plays your recorded message immediately – no buttons to press.
2. 100dB Powerful Audio Output
   Loud and clear – cuts through background noise in busy environments like gas stations, malls, and service plazas. 8‑level volume adjustable.
3. Customizable MP3 Content
   Connect via Micro USB to your computer and change voice messages anytime. Promote offers, deliver safety reminders, or greet customers.
4. Built‑in Rechargeable Lithium Battery
   500mAh battery with charging management and low‑battery indicator. Low‑power design (standby ≤40μA) – up to 30 days with daily use (20 plays/day, 10s each).
5. Flexible Playback Modes
   Single track or full playlist – choose the mode that fits your scenario. Supports external amplifier output for larger spaces.
6. Wall‑Mount Design – Quick & Easy Installation
   Simple hanging design – mount on walls, columns, or entryways in seconds. No complicated setup required.
7. 4MB Built‑in Memory
   Stores multiple MP3 tracks (16‑320 Kbps). Switch between messages for different scenarios – promotions, warnings, or announcements.

Your Space. Your Voice. Automated.

First impressions matter. Whether you're running a busy gas station, a convenience store, or a highway service plaza, communicating with customers effectively and instantly can set you apart.

Our Motion Sensor Voice Announcer (NPS‑1503) does exactly that – automatically.

Walk past. It speaks.

The built‑in PIR infrared sensor detects human movement within 0‑5 meters and instantly triggers your pre‑recorded MP3 message. No switches. No staff intervention. Just intelligent, hands‑free communication that works every time.

100dB of crystal‑clear audio

With a powerful 100dB output (within 1 meter), your message cuts through background noise – even in busy environments. Eight volume levels give you full control.

Your message. Your way.

Connect the device to your computer via Micro USB and upload any MP3 file in seconds. Whether it's a promotional offer, a safety reminder, a directional guide, or a festive greeting – you can change it anytime. With 4MB storage, you can store multiple tracks and switch between single‑track or full‑playlist modes.

No power outlet? No problem.

Powered by a built‑in 500mAh rechargeable lithium battery, this device runs independently. The low‑power design (standby ≤40μA) delivers exceptional battery life – up to 30 days with typical daily use (20 plays/day, 10 seconds each). The low‑battery indicator keeps you informed, and Micro USB charging makes it easy to recharge.

Built for high‑traffic commercial spaces

• Supermarkets & retail stores – announce daily specials and guide shoppers
• Gas stations & convenience stores – deliver safety reminders or welcome customers
• Highway service areas – provide directional information and travel tips
• Transit hubs – share schedule updates or emergency announcements
• Corporate lobbies & showrooms – create a professional, welcoming experience

Install in minutes – mount and go

The simple hanging design lets you mount it on walls, pillars, or entryways in seconds. No tools, no wiring – just peel, stick, or hang.

Ready to make your space talk?

Get a quote today. Tell us your application – we'll help you select the right configuration and audio content for your business.

Parameter	Specification
Power Supply	Micro USB 5V/1A or 3.7V 500mAh Li‑ion battery
Standby Current	≤40μA
Playback Current	≤260mA
Audio Format	MP3 (16‑320 Kbps)
Audio Output	8Ω / 2W (typical)
Sensing Range	0‑5 meters
Max Alarm Sound	≥100dB (within 1 meter)
Voice Prompt	≥85dB (within 1 meter)
Dimensions	85×36×122mm
Gross Weight	210±10g
Net Weight	150±5g
Battery Life	~30 days (20 plays/day, 10s each)