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.
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.
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