Are these intrinsically safe

Intrinsically safe is a technical term that means it is safe to use in locations that have explosive and flammable vapors present. I assume you knew that, and work in such a place, but wanted to come right out and say it just to be absolutely sure. I would be surprised if these were indeed intrinsically safe. I certainly would need assurance from the manufacturer about it, before I risked my life to find out. I work in such a place, so I'm probably more picky about it than most.

Do these have a volume limiter?

Yes, you can control the volume with these earbuds. The three yellow buttons you see in the picture: Top button, volume up. Middle button, Power/pause. Lowest button, volume down.

ASIN	B07Y3XPPL7
Additional Features	Microphone Included, Noise Isolation, Sweatproof, sports-and-exercise, wireless
Age Range Description	Adult
Audio Driver Type	Dynamic Driver
Battery Average Life	10 Hours
Battery Charge Time	1.5 Hours
Best Sellers Rank	#4,707 in Electronics ( See Top 100 in Electronics ) #409 in Earbud & In-Ear Headphones
Bluetooth Range	10 Meters
Bluetooth Version	5.0
Brand Name	Plugfones
Cable Features	Without Cable
Color	Blue, Yellow
Compatible Devices	Bluetooth-enabled devices
Connectivity Technology	Bluetooth 5, Wireless
Control Method	App
Control Type	Noise Control
Customer Reviews	4.1 4.1 out of 5 stars (4,116)
Earpiece Shape	rounded tips
Enclosure Material	Silicone
Frequency Range	20 Hz to 20,000 Hz
Global Trade Identification Number	00852837007642
Headphone Folding Features	In Ear
Headphone Jack	No Jack
Headphones Ear Placement	In Ear
Item Weight	0.05 Kilograms
Manufacturer	Plugfones
Model Name	Basic Pro
Model Number	Basic Pro
Noise Control	Sound Isolation
Number of Items	1
Specific Uses For Product	Music
Theme	Video Game
UPC	852837007642
Unit Count	1 Count
Warranty Description	180-day no hassle warranty
Water Resistance Level	Water Resistant
Wireless Technology	Bluetooth

Plugfones (Wireless Bluetooth Earplug-Earbuds) - Basic Pro Wireless Bluetooth in-Ear Earplug Earbuds - Noise Reduction Headphones with Noise Isolating Mic and Controls (Blue & Yellow)

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