Guardian Angel, retail $29.95 (
Manufactured by Teledex for Datexx (
Last updated 09-29-12

The Guardian Angel is a unit that combines the functionality of an LED nightlight, motion detector light, and emergency flashlight in one handy-dandy package.

The all-plastic Guardian Angel plugs into any standard household (United States anyway) outlet furnishing 110 to 130 volts AC, 60Hz, and features an internal rechargeable battery so you never have to change disposables.

This came to me packaged as the Sentina, but is sold as the Guardian Angel in the Herrington catalogue and on their website.


To get started, plug the Guardian Angel into any standard (in north America anyway) 110 to 130 volts AC 60Hz two or three slot receptacle to get the internal batteries charged. A red LED indicator on the front of the Guardian Angel will come on when the batteries are charging, and turn green when the charge cycle is complete.

To use the nightlight, set the switch at the lower left of the unit (as the unit is facing outward and the flashlight portion is facing upward) to the "AUTO" setting. The nightlight will then automatically come on at dusk, and go off at dawn.

You can even use the nightlight when you do not have the Guardian Angel plugged into an outlet.

To use the Guardian Angel as an automatic power failure light, set the switch at the lower right of the unit to the "AUTO" position; the three LEDs in the unit's end will come on by themselves when the power goes out or if the unit is unplugged.

To use the Guardian Angel as a flashlight, set the switch at the lower right of the unit to the "ON" position; the three LEDs in the unit's end will come on for as long as you need them on.

To use the motion detector feature of the Guardian Angel, set the switch at the lower right of the unit to the "AUTO" position, and the upper LEDs will come on automatically if motion is detected within a 12' range and at a 100° radius of the front of the device. This function works only when it's dark; the light will not come on if Guardian Angel detects motion during the daytime.

The upper light (the part with the three LEDs) will come on when Guardian Angel is switched to motion detector mode or when you plug it into an outlet in this mode; when ambient light levels are low enough to activate the nightlight. The upper light will turn itself off exactly 90 seconds (yes, I used a clock with a second hand on it to time this) after it last detects motion. This is ***PERFECTLY NORMAL*** and is nothing whatsoever to be concerned about.

Because this product is designed to plug into a standard (in north America anyway) 110 to 130 volts AC 60Hz receptacle, I don't need to tell you how to change the batteries in it - there are no disposable cells that need to be changed. So I don't have to tell you which part to remove, gently place on the floor, kick down the stairs with termites that have to pee, and then rather emphatically tell you not to.

Top (or left): AC plug folded in.
Bottom (or right): AC plug extended, ready to plug in.
See how it is labelled "Sentina" on its underside?

This is a nightlight/power failure light/motion detector light designed to be plugged in somewhere and not {vulgar term for having had intercourse} with very often, not a flashlight meant to be thrashed and abused, so I won't throw it against the wall, stomp on it, try to drown it in the {vulgar term for feces}bowl or the cistern, run over it, swing it against the concrete floor of a patio, bash it open to check it for candiosity, fire it from the cannoņata (I guess I've been watching the TV program "Viva Piņata" too much again - candiosity is usually checked with a laser-type device on a platform with a large readout, with a handheld wand that Langston Lickatoad uses, or with a pack-of-cards-sized device that Fergy Fudgehog uses; and the cannoņata is only used to shoot piņatas to piņata parties away from picturesque Piņata Island), send it to the Daystrom Institute for additional analysis, or inflict upon it punishments that I might inflict upon a flashlight. So this section of its web page will be rather bare, when compared to this section of the web page on a page about a flashlight.

When used as a nightlight, the unit has an automatic "day/night" switch, so you don't have to continually screw with it or remember to turn a switch on and off every day.

You can plug Guardian Angel in upside-down, so the light on the top will face the bottom; this is a personal preference and in no way do you have to plug it in this way.
The plug is not polarised, so it can fit most outlets in either direction.

The upper light (the part with the three LEDs) will come on when Guardian Angel senses motion in the room, and will turn itself off exactly 90 seconds after it last detects motion.

This look a lot like the web page I made for the Sentina in mid-September 2005?
Thought you'd say so.
That's because they're functionally identical (they only vary in catalogue name and the color of the "charge" LED), so I could use its web page as a template for this one.

Guardian Angel, used as a nightlight.
The green LED is the battery charging indicator.
It glows red while the charge cycle is in progress, and glows green when the charge cycle is complete.

Beam photograph of the Guardian Angel used as a flashlight, taken at ~12".
Measures 61,800mcd on a Meterman LM631 light meter.

Spectrographic analysis
Spectrographic analysis of the LEDs in this product.

ProMetric analysis
Beam cross-sectional analysis (flashlight mode).
Image made using the ProMetric System by Radiant Imaging.

Test unit was purchased on the Herrington Catalogue website on 02-23-08, and was received on 03-01-08.
I was not expecting to receive a Sentina (which it was packaged as); but this product is improved upon enough that it deserves its own web page.

Product was made in China.
A product's country of origin really does matter to some people, which is why I published it on this web page.

UPDATE: 09-29-12
From a buyer of at least eight (8) Guardian Angels that have failed, comes this:

"The LEDs start to flicker - one at a time and that continues; some die eventually and others just keep flicking. It's very annoying.

On the Datexx, it was just crappy since they wanted the original invoice which I didn't have so I might go easy on them here.

Light output in nightlight mode is not offensively bright
Motion detector really *DOES* work!
Rechargeable battery powers flashlight and nightlight

Not waterproof - but no nightlight is...will not affect rating

    PRODUCT TYPE: Automatic power failure light / nightlight / motion detector light
    LAMP TYPE: White LED
    No. OF LAMPS: 4
    BEAM TYPE: Medium spot with gentle fall-off to corona
    SWITCH TYPE: Automatic operation; slide switches to select mode
    BEZEL: Plastic; plastic window protects LEDs
    BATTERY: 3x internal rechargeable 3.6 volt NiMH AAA cell; 600mAh
    CURRENT CONSUMPTION: Unknown/unable to measure
    WATER- AND PEE-RESISTANT: Light splatter-resistance only
    WARRANTY: 1 year


    Star Rating

Guardian Angel *

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