Pambry Listen Ear PED-1704-L User Manual

Welcome to your new Personal Noise Level Alert warning device which is
one of the family of Personal Alert devices manufactured in the UK by
Pambry Electronics Ltd. The other devices relate to Noise Dose,
Carbon Dioxide (CO
/Ozone (
NO /O
2
Key Features
n Self-contained unit
n Simple to use
n Long battery life
n Optical and Vibration alert
n Patented anti-knock feature
(Patent No: GB 2 551 724)
What is it?
Your device is a small battery powered unit that measures the current noise level and
indicates whether the noise level in your environment is acceptably low or too high (ie.
safe or not safe). In this latter case you should take steps to obtain, and use, some
hearing protection. As the unit measures real time live noise levels, it can also be used to
determine when hearing protection is NOT required.
How does it work?
The noise level measurement is performed by the built-in
highly stable MEMS audio noise sensor and processed by the
battery powered internal electronics control unit. The Pambry
patented anti-knock feature is used to minimise the effect of
any mechanical case noise that can affect readings.
When the noise level exceeds the pre-set thresholds, the
ALERT lamp changes from GREEN to AMBER or RED (see
technical specification). The ALERT lamp is extinguished
once the noise level falls below threshold for more than 30
seconds.
Each transition of the ALERT lamp to AMBER or RED also
triggers the vibrate alert for approximately 15 seconds. This
can be suspended by a short press of the Power button.
Battery life is in excess of 360h and a Low battery indication
is shown by very short RED flashes of the ALERT lamp.
How do I use it?
Using the device is simplicity itself. Carefully insert your battery into the battery
compartment (located at the rear of the unit) taking note of the polarity markings.
A quality AA (LR6) alkaline type battery is recommended.
Press the Power button on the front face and wait for ALERT lamp to illuminate and
flash GREEN.
Clip
Battery
Compartment
Clip the device onto your clothing and keep it exposed to your environment. Do NOT
place in your pocket as this will adversely affect the readings and block the line of sight of
the ALERT warning lamp.
The device constantly checks the noise levels and responds accordingly to the measured
noise levels (see section "How does it work?").
The ALERT lamp should flash GREEN for a normal safe noise environment.
IF ANY OF 2 (AMBER OR RED) WARNING STATES PERSIST, IT IS IMPERATIVE
YOU OBTAIN AND USE SUITABLE HEARING PROTECTION.
After use, press and hold the power button until the ALERT lamp goes out.
- Indoor) and Nitrogen Dioxide
2
- Outdoor) measurements.
3
Power
Button
Alert
Lamp
Sensor