Too expensive to cover every site
Traditional RTUs often land in the multi-thousand-dollar range. That is fine for a few flagship sites — brutal when you have dozens of towers and microwave hops that still go dark until a tech drives out.
Remote site monitoring for radio & infrastructure
Monitor every shelter — without enterprise RTU cost at every site
WardenRTU is a technician-deployable RTU for communications sites: dry contacts and relays, a clear local Status UI, and SNMP traps into the NMS you already run. No cloud required.
Set it once. Trust it between visits.
- Local Status UI
- SNMP + email
- Update rollback
- $449, shipped (US)
The gap most radio shops live with
Enterprise site controllers are excellent when you need a full site platform. Many shelters only need dependable points into the NMS you already run.
You already have an NMS
InterMapper, LibreNMS, SolarWinds, and similar tools already watch the network. You need dry contacts, soak timing, traps, and a Status page a radio tech can use on site — not another proprietary stack.
What it looks like: a small box at the site, a clear page in your browser
No proprietary client and no cloud account. Wire it once, then check the site from any browser on your management network.
Pilot hardware shown. The production enclosure may differ. More on the hardware
Why Warden?
What matters when you are the one who gets the call.
Built for multi-site economics
$449 per site, shipping included, so more shelters can actually get monitored.
Field-tech friendly
Commission and support the way radio techs actually work remote sites.
Communications-site focused
Door, power, generator, radio — anywhere you have dry contacts.
No cloud required
Local UI and on-site logic. Your data stays on your network.
SNMP that fits your NMS
MIB and traps for InterMapper and other SNMP managers.
Interface techs will use
Status, labels, and history without a training course.
Straightforward install
Mount, power, wire, open a browser — value on the same visit.
Updates with rollback
If a package fails its health check, the previous software can return.
From box to browser
Simple enough for a first visit. Details when you need them.
1
Mount
DIN rail, cabinet, or rack area.
2
Power
DC supply standard; PoE optional.
3
Wire
Dry contacts and relays as labeled.
4
Open UI
Unit’s address in a browser; first-boot setup runs.
5
Done
Name points, set notify, prove alarms.
Works with the NMS you already run
Alarms go out as standard SNMP poll and traps — not a forced cloud or proprietary manager.
IM
InterMapper
MIB and optional probe pack so contacts and relays show up as first-class points.
SN
LibreNMS & SolarWinds
Standard SNMP poll and trap workflow into the managers many NOCs already trust.
EM
Email notify
SMTP on alarm and clear when email is the path your team actually watches.
Where it fits
Best fit: remote shelters and hops that need dry-contact monitoring, local status, and SNMP — without enterprise controller complexity.
RF
Radio & tower
Door, AC, generator, radio major/minor — Status and NMS.
MW
Microwave
Shelter monitoring without enterprise RTU weight at every hop.
PS
Public safety
Local view for techs; SNMP for the ops center you already have.
GEN
Generators
Run contacts with soak timing that cuts chatter.
BLD
Utility & facilities
Water towers, shelters, building alarms that need a watcher.
INT
Small operators
WISPs and regional networks with many small sites and limited budget.
Straightforward economics
One price, sold direct. Buy it like any other tool, or talk to us if your agency needs paperwork first.
$449shipped · US
WRTU-3B site monitor
Local UI, up to 10 dry-contact inputs, 4 relays, SNMP, and email. Built so multi-site coverage is realistic, not a capital project per tower. Compare it with what one unplanned drive to a remote site costs your shop in hours, mileage, and overtime.
- In the box: the unit, a 5 V power supply, and a one-page commissioning card
- Standard US shipping included
- Built to order: ships in about 2–3 weeks; larger orders about 4 weeks
Need a PO, quote, or pilot?
Agencies that buy on a purchase order, need a formal quote, or want to talk through a site first: tell us about the site and your NMS and we will reply with a quote and lead time.
Add-ons such as PoE power and plant-isolation I/O are available on request. Sales tax added where required. See the Terms of sale.
Built for unattended sites
Confidence when nobody is standing in front of it.
- Local operation — UI and alarming on the unit; no cloud for core monitoring.
- Update rollback — previous software can return if a package fails health check.
- Alarm history — edges recorded for review after the fact.
- Ops-network first — meant for management paths, not the open internet as a control plane.
- Start with one site — prove the workflow with your techs before you scale.
At a glance
What the unit brings to a site.
| Capability | WardenRTU |
|---|---|
| Local web interface | Yes |
| Dry-contact inputs | Yes — default up to 10, software-configurable |
| Relay outputs | Yes — default up to 4, software-configurable |
| Debounce / alarm & clear soak | Yes |
| SNMP poll + traps | Yes |
| Email alerts | Yes |
| Alarm history + download | Yes |
| No cloud required | Yes |
| Software update rollback | Yes |
| UI password & scopes | Yes |
| Configuration backup & restore | Yes |
| PoE power | Optional add-on |
| Isolated plant I/O (12/24/48 V) | Optional / when plant voltage demands it |
Ready to watch a real site?
$449 shipped. Order one now, or tell us about your NMS and points and we will walk the workflow with you.