Keyfob/wristband emergency button

DSBC-101 is Is a keyfob/wristband emergency button, it have one button for press in case of emergency ,
Table of Contents

Keyfob/wristband Emergency Button Product Specification

Product Name: Wireless emergency button
Model Name: DSBC-101

1. Introduction

1.1 Description

DSBC-101 is a portable wireless emergency button alarm. The product is developed based on Nordic’s NRF52820 chip/Silconlabs’ EFR32MG21A020F768IM32-B chip. It can be used with Zigbee/Bluetooth gateway, and then users or orderlies can receive emergency alarm signals from anywhere through the cloud.

1.2 Application
  • SOS alarm
  • Elderly care

2. Appearance

Category A ( In Stock)
Model Bluetooth 5.2 long range Bluetooth 5.0 Zigbee NFC Beep
DSBC-101-2-WB
DSBC-101-2-LY
Category C (Built by Order , MOQ: 500 )
Model Bluetooth 5.2 long range Bluetooth 5.0 Zigbee NFC Beep
DSBC-101-1-WB
DSBC-101-1-LY
DSBC-101-3-WB
DSBC-101-3-LY

3. Hardware block diagram

Bluetooth Emergency Button
Zigbee Emergency Button

4. Product specification

4.1 Performance
Item Performance
DSBC-101-1 DSBC-101-3 DSBC-101-2
Outline Size φ41mm
Net weight ~30g
Main IC nRF52820 EFR32MG21
Protocol Bluetooth 5.0 Zigbee 3.0
Transmission frequency 2.400 - 2.4835GHz 2.400 - 2.4835GHz
TX power -20 ~ +8dBm, default 0dBm 0 ~ +19.5dBm, default 19.5dBm
Receiving Sensibility -94dBm
Transmission distance 101-3: 50~100 meters (open area)
101-1: 100~200meters(open area)
200 meters minimum (open area)
Average power consumption <65uA <30uA
Working voltage: 2.2~3.6VDC 2.75~3.6VDC
Operation temperature -10~65°C
Storage temperature -30~85°C
Color Black
Built-in battery CR2032 180mAh
Battery life 2Years (Depends on the mode of operation)
IP protection IP68
NFC ISO/IEC 14443 A
Beep support
Certification CE, FCC

5. Function

5.1 Pairing and Unpairing

5.1.1 When there is no pairing information, press the button for 5 seconds to enter pairing mode, and the LED starts flashing at 2Hz (DSBC-101-1 DSBC-101-3)/1Hz (DSBC-101-2) frequency.
5.1.2 If the pairing is successful, the LED will be on for 2 seconds and the off.
5.1.3 If the pairing is not successful within 60 seconds, the LED will turn off and exit the pairing mode.
5.1.4 When there is pairing information, press the button for 5 seconds, and the LED starts flashing at 1Hz frequency. At this time, release the button. If you press the button again within 2 seconds and hold it for 5 seconds, the LED flashes at 2Hz frequency to clear the pairing and launch the pairing broadcast. If the button is not pressed again within 2seconds, the LED will stop flashing.

5.2 Indicator status
Status Description
Low voltage(DSBC-101-1: Below 20% electric quantity,
DSBC-101-2: Below 30% electric quantity
DSBC-101-3: Below 20% electric quantity, )
LED flashes every 10s
Starting up LED flashes three times at 1Hz frequency
Short press the button once LED flashing once
OTA LED always on
Pairing mode LED flashes at 2Hz (DSBC-101-1)/1Hz (DSBC-101-2) frequency for 60s
Pairing success LED is on for 2s
Switch on pairing mode when the device has pairing information LED flashes at 2Hz frequency
5.3 Button functions
Button Action Description
Short press the button once Submit an alarm message to the gateway
(Unpaired) Press the button for 5seconds. Enter pairing mode
(Paired) Press the button for 5seconds and then release, and then press the button again within 2 seconds and hold it for 5 seconds. Clear the pairing and launch the pairing broadcast
5.4 OTA

When the device is in the network state, the gateway or mobile APP issues an upgrade command to the device.

6. Caution

  1. Being close to a metal object will interfere with the signal, causing the signal to be weaken.
  2. Note the distance between DSBC-101 and the receiver to guarantee the accuracy of receiving.
  3. Keep away from the corrosive objects.

7. Reference usage

7.1 Gateway usage
  1. DSBC-101 paired to the Bluetooth/Zigbee gateway. 
  2. Bluetooth/Zigbee Gateway gets the data from the sensor and sends the information to Cloud via Wi-Fi or LTE once per second.
DSBC 101 paired to the BluetoothZigbee gateway
7.2 Mobile phone usage
  1. The device will always want to send a broadcast packet nearby at a certain frequency.
  2. A mobile phone with Bluetooth enabled can receive the beacon information and parse the data through the APP
The device will always want to send

8. Installation

8.1 Lanyard

Can be wear on the neck.

Can be wear on the neck.
8.2 Wristband

With rubber wristband accessories, can be wear the product on the wrist

With rubber wristband accessories
8.3 3M adhesive type
  1. Select the adhesive tape to stick to the back of the device, and tear off the adhesive tape on the back of the beacon sensor
  2. Just stick the beacon sensor to the surface of the object
Just stick the beacon sensor

9. QA Requirements

Quality & Testing Information
Information Description Standard(Yes)custom(No)
ESD Testing Yes
Battery life Testing Yes
RF Antenna Analysis Yes
Environmental Testing Yes
Reliability Testing Yes

10. Package

The outer packaging of the product is simple packaging, the outer packaging is a paper box material, blister box lining.

The outer packaging of the product is simple packaging
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