The DP4401Ex is a digital ATEX radio from Motorola. A channel capacity of 32 allows for sufficient communications between a team, with the ability to perform both individual and group calls dependent on whether a private or team conversation is needed. Certified for safe use within dangerous working environments, the DP4401Ex can be used in potentially explosive environments such as gas, oil and mining industries. IP67 Ingress Protection means that the radio is fully protected against intrusion of dust, whilst also being safeguarded against submersion in water for extended periods of time.
A rugged design is further reiterated by the DP4401Ex being built to military standards (MIL-STD-810 C/D/E/F/G), covering an amass of environmental conditions, the radio will continue to operate from as low as -30°C all the way through to 60°C. With the DP4401Ex being designed for use in dangerous working environments the radio has many features to help ensure the safety of workers, this alongside GPS allowing for operatives to be tracked to their exact locations, this helping to improve efficiency alongside safety.
The DP4401Ex makes use of a transmit interrupt feature that will relay an important message over any ongoing conversations, this can be used in instances where an incident has taken place or where new instructions are needed to be relayed to a team of workers. Lone Worker and Man Down work in similar manors, detecting the status of radios to determine whether the operative is in potential danger. Lone Worker monitors the activity levels of the DP4401Ex, should it be inactive for a pre-set period of time then a beep will sound from the radio, if still unresponsive then an alert will be sent to a base station or other radios within the network to alert them of the situation. Man Down works similarly, but rather than monitoring the activity levels the orientation of the radio is monitored, noticing whether the radio has been laid on its side for an extended period of time.
Coming as standard with a 2075mAh Li-Ion battery, this will allow for the DP4401Ex to operate for up to 19 hours whilst in digital mode and 16 hours whilst operating in analogue, this based on a 05 05 90 duty cycle. Many additional accessories are available for use with the DP4401Ex, these being ATEX certified ensuring the safety of use within the users working environment compliant with the radio.
The Motorola DP4401-Ex is the non-display version. If you need the display & keypad version, please see the Motorola DP4801-Ex.
The Motorola DP4401 Ex series of ATEX two way radios from Motorola have Bletooth, GPS, Man Down, Lone Worker, Transmit Interrupt as standard.
Motorola DP4401 Ex Features
- VHF (136-174MHz); UHF1 (403-470MHz)
- 32 channels
- Large, textured push-to-talk button for ease of use
- 3 programmable buttons to improve ease-of-use and increase operator efficiency
- Tri-colour LED for clear visual feedback on radio operating status
- Emergency button to help ensure rapid response to critical incidents
- Quick, easy-to-use Group, Individual and All-call capability
- Digital Phone Patch capability
- Sophisticated Emergency Calls help ensure employee safety
- PTT ID helps improve communications efficiency and system discipline
- Remote Monitor features help ensure employee safety and enable fast assessment of remote user status
- Elegant channel scanning schemes help ensure calls are received first time every time
- Privacy Features
- VOX Capability
- Transmit Interrupt
- Man Down
- Lone Worker
- 5 Tone Signalling
- Integrated GPS
- Over the Air Programming
- Intelligent Audio allowing the radio volume to automatically adjust to compensate for background noise.
- IP67 ingress protection (also certified to the highest ingress protection available under ATEX/IECEx test conditions - IP64)
- Direct Mode (Including Dual Capacity Direct Mode) / Repeater Mode
- IP Site Connect (Conventional Multiple Site Coverage)
- Capacity Plus (Single Site Trunking)
- Linked Capacity Plus (Multi Site Trunking)
Two Way Radio GPS
GPS (global positioning system) is a mechanism which a device can use a number of in-range satellites to trangulate it's position and transmit that position back to the repeater or base station. This enables the supervisor to more effectively manage team members by knowing their current location.
GPS Demonstration Video
download this Motorola GPS information sheet.
For more information on GPS,
GPS is designed for outdoor tracking. See "Indoor tracking" for indoor solutions.
GPS is a standard feature of the Motorola DP4401 Ex.
TDMA is a technology that allows several users to share the same frequency channel by dividing the signal into different time slots. With DMR this is two time slots to every 12.5KHz frequency channel allocation. Before DMR every 12.5KHz frequency allocation could carry just one broadcast of RF traffic. Now with DMR 12.5KHz bandwidth allows two voice channels. See the video below for an explanation on how this works.
Capacity plus is a quasi-trunking solutions that uses DMR TDMA time slot technology to mimic trunking technology. Capacity Plus will automatically select an available time slot for the radio trasmission. This allows for potentially unlimited channels or talk groups. The only restriction is the amount of available time slots.
Capacity Plus is only available for re-repeater-based systems, as it's essentially a repeater licence upgrade. With a basic Capacity Plus repeater licence you get 25 radio licences included. Any Capacity Plus compatible radio will work on a Capacity Plus enabled repeater.
Capacity Plus Video
Linked Capacity Plus
Linked Capacity Plus is an extension of the Capacity Plus system and allows for up to 15 sites. This enables the user to potentially build a reasobably large multi-site system at relatively low cost.
Linked Capacity Plus Video
Capacity Plus page.
For more information see our
Capacity Plus & Linked Capacity Plus is repeater-based and is not available without a repeater.
Transmit interrupt is a feature that enables a high priority transmission to take priority over normal priority transmissions. For example a supervisor might want to make an important announcement to the team or call for an evacuation in the event of a incident.
Transmit Interrupt Information Video
Transmit Interrupt is a standard feature of the Motorola DP4401 Ex.
MPT1327 is an analogue trunking soution that makes use of multiple repeaters and creates "channel pools". How it works is that when a radio needs to make a call (or transmission) the MPT1327 controller allocates a free repeater channel to the radio. When the call ends, th e channel is allocated back to the available channel pool. The MPT1327 solution is now deprecated in favour of more modern digital solutions such as DMR or dPMR Tier II and Tier III.
There are stil a very many MPT1327 solutions still installed and that's why some new radios have the ability to operate on an MPT1327 system. Of course when operating on MPT1327, even a digital radio will have to operate in analogue mode as MPT1327 voice traffic is analogue. Usually MPT1327 functionality is an optional extra by way of having an MPT1327 option board fitted in the radio, or a software activation.
MPT1327 is an optional extra for the Motorola DP4401 Ex and requires an option board installing. You can choose this option when ordering if you need MPT1327 functionality.
Lone Worker Feature
Lone Worker is a feature found on many two way radios where it's able to send a pre-determined signal, for example a distress call or alarm, to other radios in range, Lone Worker requires some type of interaction from the radio user after a period of radio inactivity. An example of this is the radio can be set to require the radio operator to interact with his or her radio once every 30 minutes. If they fail to do so, their radio will start making an audible sound. If there is still no interaction with his or her radio within 1 further minute, a alarm will sound to other team members to tell them a team member is not responding to Lone Worker. The supervisor can then dispatch another team member to the non-reponsive team member's last known location to offer assistance.
Lone Worker is built-in to the Motorola DP4401 Ex.
Man Down provides remote monitoring of workers by detecting if their radio is upright, or if the radio is on it's side assumes there may be a problem. Radios which support Man Down are fitted with an accelerometer (or similar device) which allows them to detect the orientation of the radio. If somebody slips or falls, they are likely to be on their side, Man Down will automatically detect this, activate and transmit an alert to call for help from a supervisor or other team members. This works is almost the same way as your smart phone which knows if you have it positioned portrait mode or landscape mode. See this video below to see how the a works.
Man Down Demonstration Video
The Accelerometer Science
The science which allows man-down to work is almost the same way as your smart phone which knows if you have it positioned portrait mode or landscape mode. See this video below to see how the a works.
Man Down is built-in to the Motorola DP4401Ex.
Motorola Warranty Options
As standard Motorola DP series two way radios are supplied with a standard "client return to base" (RTB) warranty. For an extra fee you can choose to purchase an extended warranty from Motorola called "Service from the Start" (SFS).
There are three levels of SFS extended warranty, each with increasing levels of cover - Lite, Essential and Comprehensive.
||Service From The Start Lite
||Service From The Start Esssential
||Service From The Start Comprehensive
|Period of Cover
||2 Years RTB
||3 or 5 Years
|Manufacturer Defects Only
|Covers Normal Wear & Tear
|Covers Accidental Damage
||10 Working Days
||5 Working Days
10am - 4pm, Mon-Fri
10am - 4pm, Mon-Fri
||Bug Fix Only
||Bug Fix Only
Notes: Turnaround time does not include transit time. Shipping "Return to Client Only" means repaired goods will be shipped back to client.
Ofcom Licence Options
All licensed radios require a licence issued by Ofcom. Radiotronics can facilitate that and make the application on your behalf. Below are the licence options.
|Ofcom Licence Options|
|Security / Construction
||Hospitality / Bars etc.
|£75 for 5 years
||£75 for 5 years
||£75 for 5 years
|3 shared assigned channels that can be used anywhere in the UK. Any of our handheld two way radios can be programmed to SImple UK.
||Up to 15 shared channels that can only be used at your premises. Any of our handheld two way radios can be programmed to SImple Site.
||Up to 15 shared channels that can be used for rental companies anywhere in the UK.
||Unique channels technically assigned only to you. Used for repeater based systems.
A note on licensed frequencies. The Ofcom licence you hold or buy denotes the frequency your radios will operate on. If you already have some radios and you would like your new radios programmed the work together, please select technically assigned, and email us your ofcom licence details to firstname.lastname@example.org
. If in doubt, please call us on 01425 533 533.