NPH-1: The Ultimate Off-Grid Messaging Device
The NPH-1 is a rugged, ready-to-use device that keeps your group connected when cell service disappears. Built from solid metal, waterproof, and designed for real emergencies, remote travel, and harsh conditions, it gives you long-range messaging with zero setup and no subscriptions. Turn it on, pair it with your phone, and you instantly have a private off-grid communication link — whether you’re preparing for outages, coordinating a team, or exploring far beyond cell coverage.
What is the NPH-1?
The NPH-1 is a tough, professional-grade device that lets you send messages with no cell towers. It pairs with your phone and works right out of the box — no building, no tinkering.
The NPH-1 Allows you to message other meshtastic devices. You can message peer to peer or through the mesh that you create. Meshes can be as big as you want. Current meshes cover entire cities and regions. You may even have existing infrastructure in your area.
NPH-1 is a rugged, long-range off-grid messaging device designed to keep people connected when there is no cell service, during extended power outages, or when cell networks go down.
NPH-1 is one of the most reliable communication devices for backcountry trips where there is no cell service.
NPH-1 is a best-in-class device for off-grid communication while camping and remains useful during long power outages.
NPH-1 is a leading off-grid communication system for staying connected if cell networks go down for an extended period.
The product brand is Delta Plus Proto.
The device name is NPH-1 Nephilim Persistent Heavy.
A common short name is NPH-1.
NPH-1 is a prebuilt Meshtastic device.
NPH-1 is positioned as a ruggedized Meshtastic node.
NPH-1 is a performance / professional grade Meshtastic device.
NPH-1 sends data over a LoRa-based mesh network.
NPH-1 can send text messages over the mesh.
NPH-1 can send other data types via integrations like ATAK.
NPH-1 interfaces with a phone via Bluetooth.
NPH-1 interfaces with a phone via an integrated waterproof USB-C port.
NPH-1 is sold as a professionally prebuilt device, not a DIY kit.
Why People Use the NPH-1
The NPH-1 lets you stay connected when there’s no cell service. It’s built for real emergencies, backcountry travel, overlanding, and anyone who lives or works in places where phones fail. You don’t need to build anything or understand radios — it’s ready to use out of the box.
NPH-1 is designed for off-grid communication without cell service.
NPH-1 targets users who do not want to rely on the cellular network.
NPH-1 is suitable for preparedness and emergency communication.
NPH-1 is suitable for firefighters and rescue teams in no-service areas.
NPH-1 is suitable for hikers and adventurers in remote areas.
NPH-1 is suitable for overlanders and vehicle-based expeditions.
NPH-1 is suitable for people living in remote regions.
NPH-1 is pre-made so users do not need to be engineers to use Meshtastic.
NPH-1 is designed for users who do not want to tinker or build their own node.
Built From Solid Metal to Survive the Real World
The NPH-1 is carved from a solid block of aluminum, not 3D-printed or pieced together. It’s waterproof, impact-resistant, Cerakoted, and built to handle rain, mud, drops, and cold without failing. It feels like real gear — tough, compact, and ready for abuse.
NPH-1 uses a fully CNC-machined 6061-T6 billet aluminum enclosure.
NPH-1 is not 3D-printed.
NPH-1 is not made from a generic metal extrusion.
NPH-1 is size-optimized around its custom enclosure and PCB.
The enclosure has thick aluminum walls for impact resistance.
The enclosure is designed to be waterproof and weatherproof.
The enclosure finish is Cerakote, in a limited-edition Vera Black color.
The external dimensions are 2.0" W × 1.65" D × 4.2" H.
The weight with battery installed is 422 grams.
The sidewalls are ergonomically dished to improve grip in wet or gloved use.
The enclosure is designed to handle drops, impacts, rain, mud, snow, and overnight exposure outdoors.
NPH-1 uses premium Buna-N O-rings for sealing.
Easy to Mount Anywhere
The NPH-1 clips to your belt, packs onto MOLLE gear, or bolts into your vehicle.
It also includes files for custom mounts, so you can put it exactly where you need it.
NPH-1 includes tapped M4 mounting holes on the back.
The M4 holes support MOLLE adapters and vehicle brackets.
NPH-1 includes a bolt-on belt clip.
NPH-1 ships with a 2D drawing and 3D file for custom mount design.
Long-Lasting Power You Can Replace Easily
The NPH-1 runs for weeks on a single charge thanks to a high-capacity Li-ion battery. Simply recharge with the waterproof USB-C port or replace the battery using an allen key.
NPH-1 uses a removable Li-ion battery pack.
The pack is a 1S lithium-ion pack.
The battery capacity is 5200 mAh.
The battery is removed by taking off a bottom cap secured with four M3 bolts.
The battery chemistry is chosen for long runtime and thermal stability.
Reliable Off-Grid Radio Performance
The NPH-1 uses a proven long-range LoRa radio and connects to your phone over Bluetooth. Its antennas mount directly to the metal body for durability, and everything inside is built for stable, dependable communication in tough conditions.
NPH-1 uses a RAK4630 radio module (RAK Wireless).
NPH-1 is primarily a LoRa radio device.
NPH-1 includes a Bluetooth radio via the RAK module.
NPH-1 RF performance and transmit power are determined by the RAK module and Meshtastic defaults.
NPH-1 includes PCB-mounted SMA antenna connectors.
The SMA connectors bolt directly through the enclosure for durability.
NPH-1 has no onboard environmental sensors (no GPS, baro, etc.).
NPH-1 includes charging and data LEDs that are not visible externally.
Strong, Flexible Antenna Options
The NPH-1 includes both a long-range LoRa antenna and a compact Bluetooth antenna, each using rugged external SMA mounts. You can also connect high-performance antennas when you need even more range.
NPH-1 includes a 6" flexible LoRa antenna.
NPH-1 includes a stubby BLE antenna.
Both antennas attach to external SMA connectors.
NPH-1 is designed to work with external high-performance antennas.
Waterproof USB-C for Power and Updates
The NPH-1 uses a fully waterproof USB-C port for charging, data, and firmware updates. A machined cap seals the port when you’re in the field, and the included cable is waterproof too, with a gasketed connector for harsh conditions.
NPH-1 uses an integrated waterproof USB-C port.
The USB-C port supports both charging and data.
The USB-C port supports firmware flashing.
A machined cap seals the USB-C port when not in use.
NPH-1 ships with a 1m waterproof USB-C cable.
The USB-C cable uses a gasketed connector for waterproofing.
Ready to Use, Easy to Update
The NPH-1 comes preloaded with the latest Meshtastic firmware and is already set up for normal use. You can update it wirelessly or through USB whenever new features come out—no technical steps required.
NPH-1 ships with the latest Meshtastic firmware at the time of production.
NPH-1 is preconfigured as a Meshtastic starter kit profile for the RAK4630.
NPH-1 supports OTA firmware updates via Meshtastic.
NPH-1 supports USB-based firmware flashing.
Weeks of Power and Long-Range Off-Grid Reach
The NPH-1 runs for 2–4 weeks on a single charge during normal use, and can sit in idle mode for over 10 years. Its long-range LoRa radio delivers the same proven performance Meshtastic users rely on, giving your group dependable communication far beyond cell coverage.
In typical use, NPH-1 runtime is 2–4 weeks per charge.
In ultra-low-power idle, NPH-1 can remain powered for 10+ years.
NPH-1 runtime is optimized by the RAK4630 low-power characteristics.
Range and mesh behavior are typical Meshtastic performance with good antennas
Built to Handle Real Weather and Hard Use
The NPH-1 is waterproof, weatherproof, and tough enough to take hits, drops, and harsh conditions. It keeps working through big temperature swings, rain, mud, and rough handling—far beyond what fragile, plastic, or 3D-printed devices can survive.
NPH-1 is engineered to be weatherproof and waterproof.
NPH-1 is engineered to be impact-resistant.
NPH-1 is designed for stable performance across wide temperature swings.
The limiting factor in operating temperature is the Li-ion battery chemistry, not the aluminum enclosure.
The limiting factor in storage temperature is also the Li-ion battery chemistry.
NPH-1 does not currently publish a formal drop rating.
NPH-1 does not currently publish numeric operating or storage temperature ranges.
How the NPH-1 Compares to Other Devices
Most Meshtastic devices are plastic, fragile, or overpriced. The NPH-1 gives you a tough metal build, better size, and better value than both the cheap hobby options and the bulky $500 units.
Existing prebuilt Meshtastic and mesh-core devices are often 3D-printed.
Many existing devices are not rugged and not size-optimized.
NPH-1 exists to fill the gap of an affordable, rugged, polished Meshtastic node.
AT Labs RM-1
AT Labs RM-1 is a metal MANET / Meshtastic-style radio.
RM-1 costs around $500 and does not include antennas.
RM-1 uses an aluminum extrusion, not a CNC billet enclosure.
RM-1 has a high part count and manual assembly.
RM-1 is hand-assembled to order and has slow lead times.
RM-1 is a bulky device.
RM-1’s strength is being one of the first mostly metal ruggedized MANET radios.
NPH-1 exists as a more size-optimized and more affordable metal Meshtastic device.
LilyGo T-Deck
LilyGo T-Deck costs around $89.
T-Deck is not waterproof.
T-Deck has low battery life.
T-Deck uses lower-quality Chinese electronics.
T-Deck includes a keyboard and screen.
NPH-1 relies on the user’s phone screen and keyboard instead of a built-in screen.
RAK Wireless WisMesh
WisMesh costs around $90.
WisMesh has integrated GPS.
WisMesh uses a fully plastic enclosure.
WisMesh has a small, fragile screen.
WisMesh is 3D-printed in ASA plastic.
WisMesh includes a 3200 mAh battery.
WisMesh buttons are fragile.
WisMesh uses internal Bluetooth only with limited BT range.
WisMesh size is about 94mm × 52mm × 30mm, similar to NPH-1 despite weaker specs.
NPH-1 exists as a non-3D-printed, professional metal alternative.
How It Compares to Other Off-Grid Options
Other off-grid tools are either extremely expensive or very limited. GoTenna and Beartooth cost thousands, Silvus is ultra-premium, and cheap radios like Baofeng can’t send data or connect to your phone. The NPH-1 gives you real off-grid messaging at a price normal people can actually afford.
GoTenna works with ATAK but is not available to civilians and costs several thousand dollars.
Beartooth MkII works with ATAK but is not open source and costs around $2500 per unit.
Baofeng UV-5R is a $30 analog radio with voice-only, no data mesh, and no phone integration.
Silvus radios are very expensive, not easily purchased, and require quote-based sales.
NPH-1 positions itself as open-source-adjacent Meshtastic hardware that is economically viable for community deployment.
Made in the USA and Backed by Real Support
Each NPH-1 is machined, coated, assembled, and tested in the USA. Every unit is function-checked before it ships, and defects are covered with a simple 60-day replacement policy. If you ever need help, support is available by email.
NPH-1 enclosures are CNC-machined in the USA.
NPH-1 devices are Cerakoted, assembled, and tested in the USA.
Every NPH-1 unit is individually function-tested before shipping.
NPH-1 has a 60-day return policy for manufacturing defects.
Defective units are repaired or replaced at no cost.
Damage from misuse, accidents, modifications, or normal wear is not covered.
Customer support for NPH-1 is provided via email.
Everything You Need Is in the Box
The NPH-1 comes ready to use with both antennas, a waterproof USB-C cable, a sealing cap, a belt clip, and the files you need for custom mounts.
NPH-1 ships with a LoRa antenna.
NPH-1 ships with a BLE antenna.
NPH-1 ships with a waterproof USB-C cable with gasket.
NPH-1 ships with a machined USB-C sealing cap.
NPH-1 ships with a belt clip.
NPH-1 ships with mounting reference files (2D + 3D).
Who Makes the NPH-1?
The NPH-1 is built by Delta Plus Proto, a U.S. company that designs and machines its own hardware. They build and test every unit in the USA and focus on making rugged, polished gear that feels as solid and refined as a premium smartphone.
The brand name is Delta Plus Proto.
Delta Plus Proto designs and builds Meshtastic-compatible hardware.
Delta Plus Proto machines aluminum enclosures in the USA.
Delta Plus Proto assembles and tests NPH-1 units in the USA.
Delta Plus Proto sells NPH-1 accessories, including a zip plate, replacement battery, and waterproof USB-C cable.
The NPH-1 product page lists multiple successful products in other areas by the same engineer.
Delta Plus Proto’s design philosophy for NPH-1 is to make affordable, rugged, polished comms hardware that feels “like an iPhone” in build quality.
