Emisar D4v2: Setup, Configuration, and Usage

Here’s how I’ve setup and configured my Emisar D4v2 for my tastes and usage.

For complete instructions on how to use the D4v2 and Anduril UI, please see the formatted manual with diagrams.

Hardware configuration

This was the configuration I selected when purchasing my Emisar D4v2:

Option	Selection
Color	Black
Switch retaining ring	Flat version
LED & Tint	Neutral White: SST-20 4000K (95CRI)
Pocket clip	Yep!

If I were to order again, I’d:

• Try out a color besides Black, maybe Cyan?
• Try out another emitter to see how it can be more throwy. I’m pretty happy with the SST-20 4000K, though.
• Add on the magnet in the tailcap.
• Try out the raised switch retaining ring.
• Get the floody optic to have on hand.

Supplementing the flashlight, I also ordered 18650 batteries and a charger:

Item	Model
Batteries	18650 Samsung 3000mAh INR18650-30Q High Discharge Flat Top	I like how these are pink. BE WARNED: These batteries can be dangerous and can start fires!
Charger	Xtar VC8 Li-ion, NiMH/NiCd QC3.0 USB-C Charger	This is the fanciest charger I’ve ever owned.

Pocket clip

I’ve attached the clip to the left side of the button. With this setup, I can generally find the button pretty quickly.

In the pocket with Aux LEDs at Low brightness in Lockout Mode

I put the flashlight in my right pocket with the light facing up when clipped to my pants or my pocket. This lets me easily glance at it to know what mode it’s in when I grab it to use it. I generally don’t like things bulking up inside my pockets, so the clip is a great add on for me.

General usage

When not in use, I keep the flashlight in Lockout Mode with the Aux LEDs configured to Volts so I can tell the state of the battery (see below: Aux LEDs). In this mode, I can hold the button down to get a little light so I can roam around the house without waking my wife up. By keeping it in Lockout Mode, I also prevent others from accidentally mis-using the light by either blinding themselves with the brightest setting or, worse, possibly starting a fire (it gets hot!).

On the Night Stand

When I have the D4v2 on my night stand, I’ll keep it pointing up in Lockout Mode so I can quickly see it in the dark. I can grab it and press to get a dim light to take the puppy out at 2am without disturbing my sleeping wife.

Poop Finder

With the SST-20 4000K’s impressive 95 CRI, my D4v2 makes for a highly effective light for making sure I don’t step on dog poop left in the backyard. It’s also come in handy a couple times when some tracked back into the house (eww), and I needed to get a clear illumination of where the tracks were for cleanup.

Mosquito Killer

Uh, wat?

Letting others use it

Muggle Mode is designed for this purpose. In light of the fact that the D4v2 can start fires, I recommend only handing it to untrained users in Muggle Mode. I think it’s hilarious that it’s called this, but it’s appropriately named. With great power comes great responsibility!

Ramping Mode

• Smooth Ramp is just so satisfying: buttery goodness.
• Automatic Memory, as I generally will turn the light on several times in an evening and prefer it to be as bright as the last time I turned it on. It’s also easy to go from Off to Ceiling with 2 Clicks or to Floor with Hold.

Aux LEDs

In my opinion, this is the most fun part of the Emisar D4v2/Anduril UI.

I like to use the High brightness Rainbow setup (for Off) when hanging out in my yard in the evenings. It’s like a subtle party light that adds a little flavor (and color!) to the atmosphere.

This is how I’ve configured my Aux LEDs:

Mode	Color	Brightness
Off	🌈 Rainbow	High
Lockout	⚡️ Volts	Low

By having the LED brightness distinct between these two modes, it’s clear to me which mode I’m in by looking at the brightness/colors.

Aux LEDs at High brightness in Off

Based on my setup, here’s a map of how I can tell what mode I’m in:

What I see	What it means
Aux on, Low brightness	I’m in Lockout Mode; the color is showing me the battery status
Aux on, High brightness	I’m in Off; I should be careful not to just keep the light in my pocket or hand it to others
Aux LEDs off	I’m either in Momentary Mode or Muggle Mode
Blinking	I’m either in a Strobe Mode or Blinkies/Utility Mode

Current Temperature

Be sure to set this up. You’ll need a thermometer to calibrate it with. If you’re American, you’re used to Fahrenheit, but Anduril UI will give you a reading in Celsius.

For reference, Americans can estimate that average room temperature is around 20–22 °C (68–72 °F).

Much like what I think of the naming of Muggle Mode, I think it’s hilarious that my flashlight can tell me the temperature. I laugh and love at the same time.