Wireless Communication Anywhere — No Trenching, No Wiring, No FCC License.
The Wireless Callbox delivers reliable two-way radio communication and remote gate control to locations where running wire isn't practical — construction sites, ranches, gated communities, construction elevators, warehouses, and large properties. Mount it, power it with batteries or 12V, and you're communicating up to a mile away in minutes.Press the call button, and an alert tone reaches any handheld radio or base station on the same channel. The built-in relay lets you unlock a gate, trigger a strobe, or activate other equipment remotely — right from the radio, no separate access control wiring required. Made in the USA and built to survive outdoor conditions year-round.
Call 888-298-9489 — we'll help make sure you get every component right the first time.
Key Features:- Mile-Plus Range — Line-of-sight communication up to a mile or more with any MURS-compatible radio or base station
- Remote Gate & Door Control — Built-in relay opens gates or triggers alarms/strobes at the push of a button
- No Trenching, No Wiring — Fully wireless, battery- or 12V-powered; mount and go
- Loud, Clear Audio — High-gain mic and adjustable volume cut through wind, traffic, and job-site noise
- Weatherproof & Vandal-Resistant — Gasket-sealed enclosure with a tamper-resistant machined aluminum PTT button
- Automatic Alerts — Broadcasts a recorded message or tone for low battery, power loss, or sensor triggers
- Up to a Year of Battery Life — Runs on 3 D-cell alkaline batteries in power-saver mode, or connect a 12V adapter for always-on intercom use
- No FCC License Needed — Operates on license-free MURS frequencies, pre-programmed to Channel 1 out of the box
- Automated Voice Alerts — Five pre-recorded messages cover PTT greetings, sensor triggers, low battery, and power loss, so you're notified the moment something needs attention.
Who Uses This
- Gated communities & apartments — Give visitors and delivery drivers a way to call the front office or trigger gate access without running conduit to a remote entrance
- Construction sites — Add a temporary or semi-permanent call point anywhere on-site with zero infrastructure
- Farms, ranches & large properties — Connect distant gates, barns, or outbuildings to a base station without trenching cable across acres of land
- Warehouses & loading docks — Alert staff to deliveries or visitors at entrances far from a wired intercom
- ADA-compliant facilities — Provide required two-way communication to handicapped parking spaces without trenching conduit across a lot
- Gas stations — Meet local regulatory requirements for pump-to-attendant communication with a self-contained, wireless install
Call 888-298-9489 — we'll help make sure you get every component right the first time.
Frequently Asked Questions
Do I need an FCC license to use this?
No. The Wireless Callbox operates on MURS (Multi-Use Radio Service) frequencies, which are license-free by FCC rule. It comes pre-programmed to Channel 1 and works out of the box with other pre-programmed MURS radios.
How far will it transmit?
Up to a mile with clear line-of-sight to the receiving radio or base station. Shorter distances typically work fine without direct line-of-sight, though range depends on terrain and obstructions.
Can it run without external power?
Yes. It operates on 3 D-cell alkaline batteries for up to a year or roughly 7,000 transmissions in power-saver mode. For always-on intercom operation, connect a 12V power adapter.
Can I use the relay to open a gate?
Yes. The built-in relay can be triggered from a button on a compatible radio or base station to unlock a gate, trigger a strobe, or activate other equipment. Several relay modes are available, including momentary, toggle, and on-while-active, depending on your setup.
What's included for installation?
Two flat-surface mounting brackets and a Torx bit, since the unit is sealed with Torx screws for security. An optional gooseneck pole bracket and external antenna adapter are available separately for pole mounting or extended range.
Installation and Operation
Programmable Relay Switch
The internal relay switch can be programmed for different operations:
- Switch on when called - Switch closes (turn on strobe etc.) when the callbox first receives a call. Switch opens as soon as the PTT button is pressed, or if the callbox has not been used longer than its reset time.
- Switch on when active - Switch is closed (turn on strobe etc.) as long as the callbox is in use. Switch opens when the callbox has not been used (transmit or receive) longer than it's reset time.
- Switch is closed (turn on strobe etc.) - When the callbox receives or transmits a message until a 2-Tone code is sent from a programmed button on a radio.
- Switch momentary - Switch is closed for 1 second when the correct 2-tone code is received. Time can be extended up to 255 seconds
- Switch toggle - Switch alternately closes and opens with the correct 2-tone code is received.
Recorded Message Broadcast
This call box also has five factory pre-recorded messages that can be transmitted to receiving radios or played on the speaker when the Push-To-Talk button is pressed:
- Voice Alert (4 seconds max) - Message is transmitted when the PTT button is first pressed
- Greeting Message (12 seconds max) - Message plays on speaker when PTT button is first pressed
- Sensor Detect On (4 seconds max) - Message is transmitted when Sensor input is closed
- Sensor Detect Off (4 seconds max) - Message is transmitted when Sensor input is opened
- Low Battery (4 seconds max) - Message is transmitted when low battery voltage is detected
- Power Fail (4 seconds max) - Message is transmitted when a +12VDC power fail is detected
Easy Installation
The callbox includes a built-in antenna so there is no requirement for an external one. For better performance through higher antenna positioning to overcome obstacles or extend range, an optional external antenna adapter is provided (refer to Related Items below).
Our callboxes come pre-programmed to Channel 1 on the FCC license-free MURS frequencies, so no additional programming is necessary. They are fully compatible with our other pre-programmed MURS radios for seamless communication.
For installation, the unit includes two mounting brackets for flat surfaces, and for pole mounting, an optional gooseneck pedestal pole bracket is available. To ensure security, the callbox is sealed with four Torx screws, and we provide a Torx bit for easy setup.
How it Works
When a visitor presses the call button, a warbling tone is transmitted to all two-way radios or base station intercoms tuned to the same channel. If the unit is operating in battery-powered mode, it will automatically activate to allow two-way communication. After a period of inactivity, the callbox returns to sleep mode and cannot be contacted again until the button is pressed by another visitor. For continuous operation in full intercom mode—where the unit remains active at all times—an optional cable and a 12-volt power supply are required (see Related Items). If you are using the internal relay for door or gate opening, you activate it by pressing a button on the inside base station intercom or handheld radio.
Full specifications
- Includes: Built-in Relay, Stored-Voice Msg, Sensor Switch Inputs
- RF Channels: 1 Channel Analog (12.5KHz)
- Signaling: CTCSS & DCS Encode/Decode, DTMF Encode/Decode, SelCal Encode/Decode, 2-Tone Decode Only
- Dimensions: 7.97" H x 6.13" W x 3.08" D
- Weight: 2.75 lbs
- Enclosure Material: Gasket Sealed, High-Impact Polycarbonate
- Colors: Black or High-Viz Green
- Environmental: Splash resistant, shock and vibration per Ritron test
- Operating Temperature: -20°C to +55°C (-4°F to 131°F). Battery rating: at 0°C the capacity is <50% rated. Talk range will decrease at low temperatures when operating on alkaline batteries.
- Programming: Field programming capability of limited parameters. Full programming capability using internal USB connector for full PC programming.
- Built-in Remote Control Relay (7 Series): Can be used to remotely control gates, doors, or strobe light. Relay switch is controlled when callbox receives the pre-programmed selective signaling command code. SPDT, 3A, 125VAC/30VDC — Normally Open or Normally Closed (NO default). Modes of operation: Momentary or Toggle, On/Off.
- Aux Sensor Monitoring Input: Optional sensors used to detect motion, gate movement, vandal/tamper, or vehicle presence can be connected to the callbox using the sensor input. Sensor input responds to an Open or Closed switch. Callbox will send either an alarm tone or a recordable voice message when the optional switch/sensor detects a change. Can also be programmed to automatically turn the callbox ON and transmit a recordable voice message or alarm tone to radios monitoring callbox activity.
- Adjustable Speaker Volume: Adjustable 20% to 100%
- Automatic Turn-Off Feature: Conserves batteries. Selectable turn-off times automatically turn the callbox off after a set period of inactivity on the radio channel. Auto turn-off must be enabled when using battery-only power.
- Listen-In Feature: Callbox can be selectively paged to allow remote monitoring of audio in the vicinity of the callbox.
- Busy Channel TX Inhibit: Prevents callbox from transmitting if someone else is using the radio channel.
- Recordable Voice Messages: Greeting Message / Send Call Alert Message / Sensor ON / Sensor OFF / Low Battery Message / Send Power Fail Message / Auto "Re-Send" — selectable 0–5 times.
- Battery Life: 3 D-Cell Alkaline Batteries — approximately 6,000 transmissions based on a duty cycle of: 3 seconds receive, 3 seconds transmit, 10 seconds standby.
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