Altronix SMP3

Auxiliary Power Supply

Average rating:

(based upon one review)

The Altronix SMP3 is an auxiliary power supply that can be used to power alarm devices if your alarm control panel does not have enough auxiliary power output. Buy the SMP3 here.
List Price
$70.00
Our Price
$50.99
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$19.01 (27%)

Description

The Altronix SMP3 is an auxiliary power supply that can be used to power alarm devices if your alarm control panel does not have enough auxiliary power output. The SMP3 converts low voltage AC power input into a selectable 6VDC, 12VDC or 24VDC power output with a continuous power supply current of up to 2.5A. The power supply also has a charging circuit with a maximum charge rate of 350mA so that you can connect a backup battery such as the Ultratech 1240. With a battery back up connected, the SMP3 will automatically switch to standby backup battery and continue to work during a power outage.

You can use the the ‘SW1’ and ‘SW2’ switches on the SMP3 power supply to choose the output voltage your alarm installation requires. With ‘SW1’ (ON) and ‘SW2’ (OFF), the SMP3 has an output voltage of 6VDC. With ‘SW1’ (OFF) and ‘SW2’ (OFF), the power supply has a 12VDC output voltage. Finally with ‘SW1’ (OFF) and ‘SW2’ (ON), the SMP3 power supply has an output voltage of 24VDC. When using the 6VDC or 12VDC output voltage, you can use an AC transformer with an output voltage of 16.5VAC, 40VA such as the Honeywell 1361. This will provide a 2.4 Amp output. To achieve the full 2.5 Amp output, a 16VAC, 55.2VA transformer must be used. If you use the SMP3 with the 24VDC voltage output, you will need a 28VAC, 100VA transformer.

The Atronix SMP3 also has convenient LED diagnostics to provide visual indication of how the power supply is operating. With the red (DC) LED on and the green (AC) LED on, the power supply is working properly. With the red (DC) LED on and the green (AC) LED off, the power supply has no AC power and the backup battery is supplying power. With the red (DC) LED off and the green (AC) LED on, the SMP3 has no DC output due to a short circuit or thermal overload condition. Finally, with both LEDs off, there is no DC output or AC input present. This indicates that AC power has been lost and either the battery is discharged or not connected.

There are (6) terminals along the bottom of the SMP3 power supply. The (2) terminals on the left side are for (+) and (-) DC which you will use to connect to your DC powered alarm device. The middle (2) terminals are for (+) and (-) BAT and you should connect the red battery lead to the BAT (+) terminal and the black battery lead to the BAT (-) terminal. The other end of the battery leads have spade connectors which slide onto the battery terminals on the Ultratech 1240 sealed lead acid battery. Finally, the last (2) terminals marked ‘AC’ are for connecting your AC transformer.

Brand: Altronix

Reviews
Fantastic Power Supply
Submitted on 01/22/2020 Alarm Grid

The Altronix SMP3 is a 2.5A power supply that can be configured for a 6VDC, 12VDC, or 24VDC power output. The device is used to power external alarm devices when the alarm panel lacks sufficient power to do so on its own. The Altonix SMP3 also includes a charging circuit that is used to charge a connected backup battery. Overall, we think this is an excellent power supply module that can be reliably used when alarm equipment requires a substantial amount of additional power beyond what an alarm control panel can offer on its own. We give the Altronix SMP3 a 5-Star rating.

There are many positive aspects regarding the Altronix SMP3 to discuss. The selectable power output of 6VDC, 12VDC, or 24VDC is a nice addition. We also really appreciate the charging circuit for keeping the device's backup battery nice and charged. The LED lights on the unit are helpful for letting the user know that the device is working properly, and they can be used to assist with troubleshooting. And since this device provides up to 2.5A of power, it will provide sufficient power for most security setups.

But there are some downsides that should be mentioned regarding the Altronix SMP3 as well. The device needs its own power transformer, and it cannot share a transformer with a panel. No backup battery comes included, so you will want to add one separately. The transformer required will depend on which selectable power output you use, and you will need a very powerful transformer for a 24VDC configuration. But these downsides are relatively minor, and they do not change our favorable opinion regarding the Altronix SMP3. For that reason, the Altronix SMP3 gets a 5-Star rating from Alarm Grid.

Good: Selectable Power Output, Battery Charging Circuit, LED Lights, Up to 2.5A of Power

Bad: Needs Own Transformer, No Backup Battery Included, 24VDC Output Requires Powerful Transformer

Bottom Line: 5 Stars

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