Two-Way Radios for Security Guards: Types, Features & Radio Etiquette

A radio is the most important tool a security guard carries. It is how you call for backup, report incidents and coordinate with your team — often faster and more reliable than a phone. This guide covers how guards communicate on the job, the radio types you will run into, and what to look for when choosing one.

Our radio picks

If your company already issues radios, use theirs. If you are equipping a small team or a post yourself, these are the three we would start with. Each fits a different situation: licensed business radio, license-free digital, or rugged and simple.

Radio	Band	Power	Channels	Battery	FCC license
Motorola RMU2040	UHF business	2 W	4	12–15 hrs	License required	Check price
Motorola Curve	900 MHz (license-free)	Not listed	10	Up to 16 hrs	No license	Check price
DEWALT DXFRS800	FRS (license-free)	2 W	22	Not listed	No license	Check price

How security guards communicate on shift

• Two-way radios: the standard for teams on one site — instant, one-to-many, works when cell service doesn’t.
• Phones: for calling police, supervisors and clients, and for apps used in reporting.
• Guard tour and reporting apps: logging patrols, checkpoints and incidents.
• Written reports: the permanent record. See our incident report guide.

Types of radios

Type	Best for	Notes
UHF business radio	Indoors, multi-floor buildings, urban sites	Penetrates walls and concrete well. Usually needs an FCC license.
VHF business radio	Open outdoor areas, parking lots, campuses	Longer range in open terrain, weaker through buildings.
Digital (DMR) radio	Larger teams and sites	Clearer audio at range, longer battery life, private channels.
FRS (“walkie-talkie”)	Very small sites, temporary events	No license needed, but low power and shared public channels.
Push-to-talk over cellular	Multi-site or city-wide teams	Uses cell data; range is nationwide but depends on coverage.

What to look for in a security radio

• Coverage for your site — test it in stairwells, basements and parking garages.
• Battery that lasts a full shift (12+ hours), plus a spare.
• Durability: drop-resistant, and a water rating if you work outside.
• An earpiece or surveillance kit so radio traffic stays discreet.
• Simple controls you can work with gloves on, without looking.
• Compatibility with the radios your team already uses.

We are building a side-by-side comparison of the best radios for security work. It will appear on this page.

Radio etiquette that keeps teams safe

1. Think before you key the mic. Know what you will say.
2. Identify yourself and who you are calling: “Post 2 to Control.”
3. Keep it short, then release the button.
4. Use plain language. Ten-codes differ between companies and cause confusion in emergencies.
5. Never share sensitive details on an open channel.
6. Have an emergency call that clears the channel — and practice it.

The phonetic alphabet

Names, plate numbers and locations get garbled over the radio. The NATO phonetic alphabet removes the guesswork — “Bravo-Seven” can’t be misheard as “D-Seven.” Learn it until you can spell without thinking:

A–I	J–R	S–Z
A — Alfa	J — Juliett	S — Sierra
B — Bravo	K — Kilo	T — Tango
C — Charlie	L — Lima	U — Uniform
D — Delta	M — Mike	V — Victor
E — Echo	N — November	W — Whiskey
F — Foxtrot	O — Oscar	X — X-ray
G — Golf	P — Papa	Y — Yankee
H — Hotel	Q — Quebec	Z — Zulu
I — India	R — Romeo

Words that keep transmissions short

Say	Meaning
Copy	I heard and understood your message.
Stand by	Wait — I will get back to you.
Say again	Repeat your last message.
Go ahead	I’m ready for your message.
Over	I’m done talking and waiting for a reply.
Out	I’m done, no reply needed.
Break, break	Interrupting for priority or emergency traffic.

Batteries and charging routine

• Start every shift with a fully charged battery and carry a spare on long shifts.
• Rotate batteries so they wear evenly, and label them by date.
• Don’t leave radios sitting on the charger for days — follow the manufacturer’s guidance.
• Replace batteries that no longer last a full shift. A dead radio is a safety problem.
• Check the battery indicator at the start of every patrol.

Earpieces and accessories

Accessory	Best for
Surveillance kit (coiled acoustic tube)	Nightclubs, events, executive protection — discreet and clear in noise
Single-wire earpiece	Lobby and retail posts where you want a lighter setup
Speaker microphone	Patrols and outdoor work; mic on the shoulder, radio on the belt
Noise-cancelling headset	Very loud venues and industrial sites
Belt clip / holster	Keeping the radio secure during physical work

Emergency radio procedure

1. Use your team’s emergency call or “break, break” to clear the channel.
2. Give your call sign and exact location first.
3. Say what is happening in a few words: “Fight, two males, front door.”
4. Say what you need: backup, EMS, police.
5. Keep your radio on and stay on the channel until it is resolved.

Practice this with your team before you need it. In a real emergency, nobody remembers procedures they’ve never used.

Rookie radio mistakes

• Talking before the button is fully pressed, so the first words get cut off.
• Long, rambling messages that tie up the channel when someone else needs it.
• Shouting into the mic. It distorts your voice. Speak normally, a few inches away.
• Using names, slang or jokes on a channel that customers, clients or scanners might hear.
• Turning the volume down to zero and missing calls.
• Not answering a check-in. Silence makes your team assume the worst.

Planning radios for a team

Before buying or assigning radios, walk the site with one in hand. Test the stairwells, basement, parking structure, back-of-house corridors and the far edge of the property. That walk tells you whether you need stronger radios, a repeater, or a different band. Plan one radio per person on shift plus at least one spare, and enough batteries for every radio to swap mid-shift. If several teams share a site — security, maintenance, event staff — give each its own channel and agree on one shared channel for emergencies.

Looking after your radio

• Wipe it down after shifts in rain, heat or crowds.
• Check antennas for cracks and make sure they are screwed in firmly.
• Keep earpiece cables untangled and replace them when the audio starts crackling.
• Report damaged radios right away instead of “making do.”
• Never lend your radio to someone outside the team.

Privacy on the radio

Assume anything you say can be overheard. Analog radios can be picked up by scanners, and radios left on a desk or speaker can be heard by anyone nearby. Keep names, personal information and sensitive details off the air — use descriptions, call signs and locations instead, and move private details to a phone call.

Choosing radios for your post

Post	Recommended setup
Office / lobby	UHF handheld, single-wire earpiece
Nightclub / venue	UHF or digital radio, surveillance kit with acoustic tube
Hospital / campus	Digital (DMR) radio for range and clarity, speaker mic
Parking lots / outdoor sites	VHF or UHF depending on buildings, speaker mic, weather-resistant radio
Multi-site mobile patrol	Push-to-talk over cellular, plus a site radio where needed

Whatever you choose, the team should all be on compatible radios. A great radio that can’t talk to the rest of the team is useless.