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RF & Wireless Systems · Hardware

Wireless Call Button Platform

Coming soon

One button hardware for every call scenario.

Request information Specifications
CB1-W wireless call button: anthracite wall housing, large light grey key with bell icon and green-lit RGB LED ring

Overview

The problem. Call and alarm buttons all do the same job: someone presses, someone somewhere is notified. Yet each application is sold as a separate product — waiter button, panic button, taxi button, fire button — and most are short-range (100–200 m), one-way, unencrypted 433 MHz "remote" circuits with unknown battery life. They do not reach from the beach to the kitchen, from the neighborhood to the taxi stand, or from the factory yard to the guard hut; nobody knows whether a press was received; and two systems on the same site trigger each other.

The solution. The platform puts a battery-powered LoRa node (EM-G0L-433-LP) into a button housing. Each press sends an encrypted packet with the button ID, button number, battery status and a counter; when the central unit or receiver returns an acknowledgment (ACK), the LED on the button turns green (two-way operation is targeted). The firmware profile defines what a press means: waiter / bill / cancel, attack / fire / patrol, taxi call / cancel, break-glass alarm + tamper.

Wake-on-press design. The MCU and radio sleep until the button is pressed; periodic "I'm alive" packets let the central unit track battery and link status. Housing and labeling change with the application; the electronics stay the same.

Call button family: CB1-W, CB3-W, hanging CB1-K, wired CB1-W-P, red break-glass CBF-GB and the CB6-T desk unit in front
Product family
CB1-W exploded: base, CR123A battery, PCB with EM-G0L-433-LP module, light guide ring, key and front cover
Exploded view

This product is in development or field testing. Contact us for technical information, pilot use and a preliminary quotation.

Features

  • Profile selection: waiter, taxi, guard, fire, forklift, panic and door profiles on the same hardware; set at the factory or with a service tool.
  • "I'm alive" report: battery, temperature and RSSI feed a maintenance list at the central unit.
  • Long / double press: extra meanings on a single key (emergency, cancel).
  • External contact input: button transmitter for doors, barriers or machines; single-contact monitoring. For 8-input battery-powered monitoring, see the Wireless Digital I/O Link.
  • Optional modules: buzzer, vibration, RFID (guard profile), IP65 housing, u.FL external antenna.
  • TargetACK LED: the user sees on the button that the call was received (two-way LoRa).
  • TargetReplay protection and AES: the button cannot be cloned.
  • TargetTamper contact and supervision: in the fire and guard profiles.
  • Target868 MHz version: for export markets.

Variants

Variants
Model codeButtonsHousingBatteryProfilesRequest information
CB1-W1Wall / table, IP54CR123A or 2×AAWaiter, taxi, panic, forkliftRequest information: CB1-W
CB1-K1Key fob / lanyardCR2032 / CR123APanic, lone workerRequest information: CB1-K
CB3-W3Wall, IP54CR123A / 2×AAGuard (attack / fire / patrol); taxi (call / cancel / emergency); waiter (waiter / bill / cancel)Request information: CB3-W
CB6-T6Tabletop2×AAWaiter / hotel (6 service types)Request information: CB6-T
CBF-GB1 (break-glass / manual call point)Red fire call point housing, IP54 / IP65Li-SOCl2 AAFireRequest information: CBF-GB
CB1-W-P1 + external inputWallBatteryDoor / barrier button transmitter, machine callRequest information: CB1-W-P

Specifications

Values marked “Target” are design targets, next-generation values or chip-vendor data; they are updated as measurement and certification are completed.

Radio
Frequency band433.05–434.79 MHz, 8 channels (SX1268)
868 MHz versionAs an optionTarget
Output power+22 dBm max.; profile default +14…+20 dBm (for battery life)
Receiver sensitivity−129 dBm @ SF11 (chip datasheet)
Modulation / packetLoRa SF7–SF12; short packet (≤ 16 bytes)
AntennaInternal (PCB trace / helical); u.FL option in the IP65 outdoor housing
Range
Open field≥ 1500 m (SF9, internal antenna, button at 1.2 m wall height, central outdoor omni antenna at 3 m)Target
Indoors≥ 150 m / 3 floors (hotel)Target
Communication & security
Encryption / codingAES-128-CCM + counter (replay protection), NetID + 16-bit addressTarget
Coding in previous-generation buttonsID + CRC
PairingLearn mode on the receiver (press the button → add to list) or via a service tool; UID-basedTarget
Systems on the same site≥ 8 systems via 8 channels × NetIDTarget
Performance & fail-safe
Press → central unit< 300 ms @ SF7–SF9Target
ACK → LED< 1 sTarget
Retries3 attempts, random 50–300 ms back-off
Power
BatteryCR123A (3 V, ~1500 mAh) or 2×AATarget
Break-glass and key-fob batteryBreak-glass: Li-SOCl2 AA; key fob: CR2032
ConsumptionPress event ~120 mA × ~100 ms; 2 "I'm alive" packets a day
Sleep current< 10 µATarget
Battery life≥ 2 years at 20 presses/day (CR123A); ≥ 5 years in the fire profile (rare presses); estimated with the SDK calculatorTarget
Low-battery threshold2.7 V (CR123A); reported to the central unit
Inputs / outputs
Keys1 / 3 / 6 mechanical keys; break-glass: glass/plastic plate + micro switch; long press 1.5 s, double press
Indicators1× RGB LED (sent / ACK / error / battery); buzzer (optional, per profile)
External input1× dry contact (CB1-W-P: door / barrier / machine)
Tamper contact1× tamper inputTarget
ServiceSWD pads; UART (programming fixture)
Mechanical & environmental
Housing dimensionsWall 1/3 keys ~80 × 80 × 25 mm; table 6 keys ~120 × 80 × 30 mmTarget
Other housingsKey fob; standard red fire call point housing for break-glass
Ingress protectionIP54 (indoor / semi-outdoor); IP65 (outdoor, outdoor break-glass)Target
MountingScrews / double-sided tape / lanyard
Operating temperature−20…+60 °C (depends on battery chemistry; −40…+85 °C with Li-SOCl2)Target
Warranty & service
Warranty2 years; battery is a consumableTarget

Applications

  • Waiter and service calls
  • Taxi stand subscribers
  • Facility guard posts
  • Industrial fire call points
  • Forklift and operator calls
  • Line-stop notification
  • Panic / lone worker
  • Door and barrier transmitter

Each profile works with the receiver or central unit of the related product:

On the pager side, the WR-001 LoRa Wireless Alarm / Call Remote can show and acknowledge the call in the staff member's pocket. Field users of the waiter call application are listed on that product's page.

Compliance & documentation

The platform is at prototype stage. The datasheet, profile guides, pairing/installation card and certificates will be prepared according to the plan below.

  • CE – RED 2014/53/EU (EN 300 220-2, EN 301 489-1/-3)
    Step by step, starting at module level
    Target
  • EN 62368-1
    Target
  • RoHS declaration
    Target
  • EN 54-11 (manual call point) / EN 54-25 (radio components) — fire profile
    Together with the certification of the Wireless Fire Alarm System (Firesens)
    Target
  • Battery safety and transport documents
    Target
  • CE declaration of conformity
    Target

Frequently asked questions

Can I use the same button for waiter and taxi calls?

Yes; the hardware is the same, only the profile and label differ. The receiver side depends on the application.

When I press, will I see that my call was received?

With the targeted two-way operation, yes: the LED turns green when the acknowledgment arrives and red if it does not — press again or check the range.

How long does the battery last?

The target is ≥ 2 years with a CR123A at 20 presses a day and ≥ 5 years in the fire profile. Low batteries show up at the central unit.

What is the range?

It is a battery-powered device with an internal antenna, so the link budget is gained at the central antenna. The targets are ≥ 1.5 km in open field and 3 floors inside a hotel; a repeater extends it.

Will two systems in the same building (hotel + restaurant) interfere?

No; channel and network ID (NetID) are kept separate. With the targeted AES encryption, packets from another system are not processed.

Can a button be cloned?

Not in the target design: it uses AES-128 encryption and a replay counter.

Does it work with my previous-generation receiver?

It does not work with previous-generation (CC1101-based) receivers. Compatibility with taxi stand buttons is covered on the Wireless Taxi Call System page.

Is it certified as a fire call point?

Not yet. EN 54-11 and EN 54-25 certification is targeted together with the Wireless Fire Alarm System (Firesens); it is not called "fire certified" until the documents are in hand.

What about the warranty?

A 2-year warranty is planned; the battery is a consumable.

Get information about this product

Our engineering team replies within 24 hours.

Request information +90 (312) 395 85 86

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