Internet connected ultrasonic alarm device with adjustable trigger range and 40 seconds of audio record / playback time

This is a quick overview of a device that gives audio and visual alarm when it's triggered. The sensor used for object detection is an ultrasonic sensor with a triggering range from 1cm to 300cm and a beam angle of 30 degree from the point of origin. This triggering range is adjustable at 30cm interval via a dial in the front of the device and the set triggering range is visible via the 10 segments LED on top of the device.

The combination of narrower beam angle and adjustable triggering range makes this device an ideal candidate for applications that need to minimize false alarm.

Note,

This device allows instant recording of new audio (up to 40 seconds) and the recorded audio is stored in flash memory for playback. If you want longer playback time, please refer to the link below for a similar device that uses SD Card as its storage.

https://wei48221.blogspot.com/2019/06/internet-connected-ultrasonic-alarm_6.html.

Potential Usages

Specifications

Trigger Range:

- 1cm ~ 300cm.

Beam Angle:

- Approximately 30 degrees from the point of origin.

Recording:

- Record up to 40 seconds of audio;
- The recorded audio is stored in non-volatile flash memory;
- Press the recording button to start recording, release the button to stop recording.

Network Interface:

- 802.11 b/g/n WiFi.

Alarm (local):

- Playback pre-recorded audio via built-in / external speaker;
- Switch on external warning device (light, buzzer, etc.) via dry contact.

Alarm (via internet):

- Email;
- Instant Message (Telegram).

Input Power:

- DC 5V / 2A.

Dimension:

- 125mm x 80mm x 32mm.

Device Configuration

The following parameters could be edited by the device administrator to meet different application needs.

Message Example

I/O Interface

Front I/O Interface Description 

Power and Volume Control

External Speaker Connector, Recording and Payback Buttons

Dry Contact Output Connector, Sensor Detection Range Adjustment

Dry Contact Output Wiring Reference

Rear I/O Interface Description 

My Offer

If you are interested in buying this device, please find below my offer:

Price: Please contact me;
Item Location: Taipei, TAIWAN;
Shipping, tax, and tariff: To be paid by buyer.

Note, 
- A DC5V, 2A power supply is needed but not included in the offer above.

Additional Offer - Backend Management System

The device's ability to be connected to the Internet opens up door to many possibilities. If you need a unified backend management system to monitor and operate tens, hundreds or even thousands of this device on tablet / smartphone / laptop, please feel free to contact me.