BACnet alarms on WhatsApp / Telegram

Need to connect BACnet and WhatsApp / Telegram? The Weble WBox routes BACnet WhatsApp / Telegram natively: one gateway speaks both protocols and maps data points in real time — no PC, no middleware, no cloud dependency.

The protocols

BACnet

BACnet (BACnet/IP, MS/TP) is the standard for building management systems and HVAC supervision.

BACnet driver →

WhatsApp / Telegram

The Internet Messaging driver sends alarms and notifications from the gateway to WhatsApp and Telegram — individual numbers or named groups — and reads replies for acknowledgement, with no WhatsApp Business account and no Telegram bot.

WhatsApp / Telegram driver →

Typical use case

The BMS knows the fault the moment it happens — a pump trip, a frost alarm, a ventilation failure — but nobody sits in front of the head-end at night or on weekends. The WBox watches the BACnet objects and pushes the alarm straight to WhatsApp or Telegram: to the on-call technician's number, or to a maintenance group the whole team follows. Recipients can reply to acknowledge, and the reply flows back into the gateway logic — a notification chain with no extra app to install and no alarm server to maintain.

Example deployment

Typical scenario Night alarms straight to the on-call phone A heating plant is supervised over BACnet. Outside working hours, the WBox filters the critical objects — burner fault, low pressure, frost risk — and messages the on-call technician on WhatsApp; a reply acknowledges the alarm, and without one the gateway escalates to the next number. Technical documentation →

How the WBox bridges BACnet and WhatsApp / Telegram

The BACnet driver polls the supervised objects (BACnet/IP or MS/TP) or receives COV notifications; a logic step — Blockly or JavaScript — decides what deserves a message, formats the text and writes it to an Internet Messaging address: %im:whatsapp/+41791234567 for a person, %im:whatsapp/Maintenance for a named group, telegram likewise. Messages travel through the Weble cloud messaging service over a secure outbound connection — no WhatsApp Business account, no Telegram bot, no inbound port. Replies arrive on the driver's #lastMessage address, so an 'OK' from the technician can silence the repeat or escalate to the next person.

Step by step

Connect the WBox to the BACnet network — BACnet/IP on the LAN, or MS/TP over RS-485 — and to the internet (Ethernet or LTE).
Enable the BACnet and Internet Messaging drivers — licence-activated, no extra hardware.
Pick the objects to supervise (Binary Inputs for faults, Analog Inputs for limits) and set thresholds or COV subscriptions.
Write the alarm rule in Blockly or JavaScript: format the message and send it to %im:whatsapp/+417… or a group like %im:whatsapp/Maintenance — Telegram works the same way.
Test end-to-end: trip a point, receive the message, reply — the reply appears on #lastMessage for acknowledgement logic.

Example mapping

A worked example on a plant room:

BACnet Binary Input 4 (pump fault) → WhatsApp group %im:whatsapp/Maintenance
BACnet Analog Input 2 over its limit (flow temperature) → Telegram %im:telegram/+41791234567
Reply in the group → #lastMessage address, read back by the gateway logic (acknowledgement)

Capacity & limits

BACnet — BACnet/IP scales to large object counts; BACnet MS/TP carries up to 127 master nodes per segment.
WhatsApp / Telegram — Internet Messaging sends through the Weble cloud messaging service over a secure outbound link — recipients are individual numbers or named groups, with replies routed back to the gateway; no WhatsApp Business account, no Telegram bot, no inbound port.

On the WBox, a driver licence enables the whole protocol — there is no artificial per-point tier to unlock. Capacity scales with the gateway model, from the compact S103 to the E413: you are bounded by the field bus, not by your licence.

Frequently asked questions

Do I need a WhatsApp Business account or a Telegram bot?

No. Messages are sent through the Weble cloud messaging service over a secure outbound connection — you configure recipients on the WBox and it works, with no Meta or Telegram-side setup and no bot to host.

Can the technician acknowledge a BACnet alarm by replying?

Yes. Replies come back to the gateway on the driver's #lastMessage address, where your logic reads them — an 'OK' can stop the repetition, log the acknowledgement or escalate to the next person on call.

Can I send to a group instead of individual numbers?

Both work: individual numbers in international format (+41…), or a named group — the whole maintenance team sees the alarm and who acknowledged it. A message can also target one member of a group.

What do I need to run BACnet alarms to WhatsApp or Telegram?

A WBox gateway with the BACnet and Internet Messaging driver licences, plus an internet connection (Ethernet or LTE). It supervises any BACnet/IP or MS/TP installation — no alarm server, no extra app for the recipients.