Digital MultiMeter with a Voltage Beeper

jaugu...@verizon.net

unread,

Jan 10, 2020, 4:02:11 PM1/10/20

to

Hi,

I am looking to buy a DMM that has a BEEPER when a voltage (AC or DC)
occurs above a preset threshold.

Example: With this DMM hooked up to a circuit, if the voltage rises
above 12VDC (example), the DMM will BEEP.

Does anyone know of such a DMM? Please include make and model
number.

Thank You in advance, John

Jeff Liebermann

unread,

Jan 12, 2020, 6:05:30 PM1/12/20

to

On Fri, 10 Jan 2020 16:01:37 -0500, jaugu...@verizon.net wrote:

> I am looking to buy a DMM that has a BEEPER when a voltage (AC or DC)
>occurs above a preset threshold.
>
> Example: With this DMM hooked up to a circuit, if the voltage rises
>above 12VDC (example), the DMM will BEEP.

I don't know of any such device that resembles the common DVM/DMM.
However, the industrial control market is full of DPM (digital panel
meters) and battery monitors that have alarm outputs. When the
display voltage gets out of range, either too high, or too low, it
closes a relay. Since your application isn't particularly critical
and precision isn't important, something from China or surplus should
suffice. Some examples:
<https://www.ebay.com/itm/LED-Display-Panel-Digital-Voltmeter-w-Alarm-Indicator-3-Way-DC-0-99-9V-Red/253074549230>
<https://www.ebay.com/itm/DA8-RRB-Digital-Sensor-Meter-2-Relay-Alarm-Output-4-digit-LED-Display-D7K0/133289489539>
<https://www.ebay.com/itm/Universal-Battery-Alarm-Panel-Meter-4-50VDC-33991-ME/322938101800>
<https://www.ebay.com/itm/1-H-P-Edge-Taunt-Band-Panel-Meter-Model-6403-wt-Low-High-Alarm-settings-0-300/312554778647>
<https://www.ebay.com/itm/Battery-Monitor-6in1-VOLT-AMP-AH-Time-Power-Protection-Alarm-Buzzer-DC-200V-300A/153388652680>
etc...

You might also consider building such a device using a "window
comparator" or "window detector" circuit.
<https://en.wikipedia.org/wiki/Window_detector>
<http://www.learningaboutelectronics.com/Articles/Window-comparator-circuit.php>
etc...

--
Jeff Liebermann je...@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

jaugu...@verizon.net

unread,

Jan 14, 2020, 7:04:58 AM1/14/20

to

>> I am looking to buy a DMM that has a BEEPER when a voltage (AC or DC)
>>occurs above a preset threshold.
>>
>> Example: With this DMM hooked up to a circuit, if the voltage rises
>>above 12VDC (example), the DMM will BEEP.
>
>I don't know of any such device that resembles the common DVM/DMM.
>However, the industrial control market is full of DPM (digital panel
>meters) and battery monitors that have alarm outputs. When the
>display voltage gets out of range, either too high, or too low, it
>closes a relay. Since your application isn't particularly critical
>and precision isn't important, something from China or surplus should
>suffice. Some examples:
><https://www.ebay.com/itm/LED-Display-Panel-Digital-Voltmeter-w-Alarm-Indicator-3-Way-DC-0-99-9V-Red/253074549230>
><https://www.ebay.com/itm/DA8-RRB-Digital-Sensor-Meter-2-Relay-Alarm-Output-4-digit-LED-Display-D7K0/133289489539>
><https://www.ebay.com/itm/Universal-Battery-Alarm-Panel-Meter-4-50VDC-33991-ME/322938101800>
><https://www.ebay.com/itm/1-H-P-Edge-Taunt-Band-Panel-Meter-Model-6403-wt-Low-High-Alarm-settings-0-300/312554778647>
><https://www.ebay.com/itm/Battery-Monitor-6in1-VOLT-AMP-AH-Time-Power-Protection-Alarm-Buzzer-DC-200V-300A/153388652680>
>etc...
>
>You might also consider building such a device using a "window
>comparator" or "window detector" circuit.
><https://en.wikipedia.org/wiki/Window_detector>
><http://www.learningaboutelectronics.com/Articles/Window-comparator-circuit.php>
>etc...

Hi, I should have mentioned that it is important to have a high impedance
(virtually no loading effect). A DMM may have 10M ohms.

John

John Robertson

unread,

Jan 14, 2020, 1:40:06 PM1/14/20

to

I rather like the Mooshimeter - which will do a log of various
measurements to your phone, computer, or its own internal memory card...

https://moosh.im/

It is a great tool!

John :-#)#

--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

gregz

unread,

Jan 17, 2020, 3:00:58 AM1/17/20

to

I was thinking my Tripplet/B&K might have a relay function. It's a bench
multimeter. Would have to investigate.

Greg