Nordic 51822 Technical manual

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User Operation Instruction
1. Introduction
Bluetooth lock scheme, using Nordic51822 Bluetooth chip as the main control, can support low-
power Bluetooth (BLE 4.1). It can manage the door lock via password, IC card, and electronic key on
the App. M1 card and password can be used to open the door. The door lock supports firmware
upgrades and software functions can be extended with firmware upgrades. The App ekey, password,
and IC card can all be specified for a validity period.
•Bluetooth
Open the door on the phone APP via Bluetooth.
•Ekey
Send an ekey to your tenant and set the validity period of each key. You can also freeze the electronic
key at any time.
•Passcode
Touch the keypad to enter a valid password to open the door.
•IC Card
Swipe the effective IC card into the door.
•Unlock records
All the unlock records can be seen on the administrator APP no matter in which way to unlock.
2. Parameters
Communication Methods
Bluetooth 4.1 BLE
Supporting systems
Android 4.3/IOS7.0 above
Power supply
4 AA Alkaline 1.5V Batteries (LR6) (6V)
Range of continuous supply voltage
4.0-7.0V
Maximum supply voltage
12V-MAX
Range of backup supply voltage
4.0-10.0V
Low battery alarm voltage
4.8V
Stand-by current
65uA

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Operating current
<200MA
Unlock time
≈1.5 second
Working temperature
-40~70 Celsius
Types of button
capacitive touch button
No. of passcode
send passcode via APP
unlimited
self-defined passcode
150
Supporting card
M1 card
No. of IC card
200
The way to unlock
App、passcode、IC card、key
3. Operation
Add a Bluetooth Administrator to the lock
Warning: Once a Bluetooth Administrator is added to the lock, all previous passcodes/cards
added on the lock are invalidated.
Notice: Please turn on the Bluetooth of your phone and keep it close to the lock
Activate the App
Press the “ ”sign on the upper left of the APP
Press [Add lock]
Select the right type of lock
Touch the keypad to activate the lock
The lock gives a voice prompt “Please add a Bluetooth Administrator“, and it appears on the APP
with a “+”sign at the end
Press the “+” sign and follow the steps to add a Bluetooth Administrator
Add user passcodes
Notice: Please turn on the Bluetooth of your phone and keep it close to the lock
Activate the APP
Select the lock
Press [Generate Passcode]
Follow the steps on the APP to generate user passcode and share with others

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Add IC cards
Notice: Please turn on the Bluetooth of your phone and keep it close to the lock
Activate the APP
Select the lock on the APP
Press [IC Cards]
Press the “ ”sign on the upper right corner of the App
On voice prompt “Please swipe your card”, swipe a Mifare card on the lock
Voice prompt " Operation successful“
Unlock with passcode
Notice: Pressing “*”will delete the last entered digit during input
Input passcode and press “#”
If the passcode is correct
Voice prompt " Unlocked“
If the passcode is incorrect
Voice prompt " Operation failed"
If the lock detects 5 consecutive trials of incorrect passcode consists of more than 4 digits, it gives a
voice prompt " Unauthorized operation, the system is locked".
If the passcode has expired
Voice prompt “Unauthorized passcode”
Unlock with card
Swipe the card on the lock
If the card is a valid authorized card
Voice prompt“Unlocked“
If the card has expired
Voice prompt“Unauthorized card”
If the card has never been authorized
Voice prompt “Operation failed”.

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Locking
5 seconds after the lock is unlocked, it automatically locks and gives a voice prompt “Locked”
(Except it is set to passage mode）
Modify user passcodes on the lock
Input [*10 #]
Voice prompt “Please input original passcode”
Input [original passcode#]
If the original passcode is correct
Voice prompt “Please input a new passcode”
Input [new passcode#]
Voice prompt “Please input again”
Input [new passcode#]
Voice prompt “Operation successful”or “Operation failed” if inputs do not match.
If the original passcode is incorrect
Voice prompt “Wrong passcode”
Low power warning
If the battery is low, the keypad will light up and flash for a second when it is activated, meanwhile
the lock gives a voice prompt “Battery is low, please replace”
Keypad lockup
The keypad will be disabled for 5 minutes after 5 consecutive trials of wrong passcode that consists
of more than 4 digits, meanwhile the lock gives a voice prompt “Unauthorized operation, the
system is locked”
During the lockup period, the keypad light will flash quickly on each pressing. Unlocking with APP or
card is still functional in this case, and the keypad will be back to normal once the lock is unlocked
successfully with an APP or a card.
The keypad will be re-enabled after 5 minutes’lockup, and user can continue to input passcode.
However, each wrong passcode trial will result in 5 minutes’ lockup thereafter.

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Restore to default factory setting/Delete Bluetooth Administrator
Warning: Once the Bluetooth Administrator is deleted, the lock is set to default factory setting
Delete Bluetooth Administrator on the APP
Notice: Please turn on the Bluetooth of your phone and keep it close to the lock
Select the lock on the APP
Press [Settings]
Press [Delete]
Follow the steps on the APP to delete the lock
Delete Bluetooth Administrator on the lock
Long press the reset button
Voice prompt “please input initialization passcode”
Input[000#]
Voice prompt“Operation successful“
4. Manage the lock without APP
1Add/Edit Admin Passcode
Notice: Default Admin Passcode is 123456, and can only be used to add a new Admin Passcode.
1.1 Input [*12#]
1.2 Voice prompt “Please input the original passcode“
1.3 Input [original passcode#]
1.4 If the original passcode is correct
1.4.1 Voice prompt “Please input a new passcode”
1.4.2 Input [new passcode#]
1.4.3 Voice prompt “Please input again”
1.4.4 Input [new passcode#]
1.4.5 Voice prompt “Operation successful”or “operation failed” if inputs do not match.
1.5 If the original passcode is incorrect
1.5.1 Voice prompt “wrong passcode”

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2Add user passcode
2.1 Input [*85#]
2.2 Voice prompt “Please input Admin Passcode”
2.3 Input [Admin Passcode#]
2.3.1 If the Admin Passcode is correct
2.3.1.1 Voice prompt “Please input a new passcode”
2.3.1.2 Input [new Passcode#]
2.3.1.3 Voice prompt “Please input again”
2.3.1.4 Input [new passcode#]
2.3.1.5 Voice prompt “Input successful”or “Operation failed” if inputs do not match.
2.3.2 If the Admin Passcode is incorrect
2.3.2.1 Voice prompt “Operation failed”
3Add IC cards
3.1 Input [*85#]
3.2 Voice prompt “Please input Admin Passcode”
3.3 Input [Admin Passcode#]
3.3.1 If the Admin Passcode is correct
3.3.1.1 Voice prompt “Please swipe your card”
3.3.1.2 Swipe a card on the lock
3.3.1.3 Voice prompt “Input successful”
3.3.2 If the Admin Passcode is incorrect
3.3.2.1 Voice prompt “Operation failed”
4Delete all IC cards
4.1 Input [*69#]
4.2 Voice prompt “Please input Admin Passcode”
4.3 Input [Admin Passcode#]
4.3.1 If the Admin Passcode is correct
4.3.1.1 Voice prompt “Operation successful”

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4.3.2 If the Admin Passcode is incorrect
4.3.2.1 Voice prompt “Operation failed”
5Delete all user passcodes
Warning:This process will delete all user passcodes, including those generated by APP, but not the
Admin Passcode
5.1 Input [*71#]
5.2 Voice prompt “Please input Admin Passcode”
5.3 Input [Admin Passcode#]
5.3.1 If the Admin Passcode is correct
5.3.1.1 Voice prompt “Operation successful”
5.3.2 If the Admin Passcode is incorrect
5.3.2.1 Voice prompt “Operation failed”
6Add Bluetooth Administrator to the lock
Warning: Once a Bluetooth Administrator is added, all previous passcodes/cards added on the lock
are invalidated. Administrator can now add passcodes on APP
6.1 Input [*83#]
6.2 Voice prompt “Please input Admin Passcode”
6.3 Input [Admin Passcode#]
6.3.1 If the Admin Passcode is correct
6.3.1.1 Voice prompt “please add a Bluetooth Administrator”
6.3.1.2 Activate the App
6.3.1.3 Press the “ ”sign on the upper left of the APP
6.3.1.4 Press [Add lock]
6.3.1.5 Select the right type of lock
6.3.1.6 The lock appears on the APP with a “+”sign at the end
6.3.1.7 Press the “+” sign and follow the steps to add a Bluetooth Administrator
6.3.1.8 Once the Bluetooth administrator is added, the lock gives a voice prompt
“Bluetooth Administrator added successfully

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6.3.2 If the Admin Passcode is incorrect
6.3.2.1 Voice prompt “Operation failed”
FCC Statement
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15
of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the equipment off and on,
the user is encouraged to try to correct the interference by one or more of the following measures:
•Reorient or relocate the receivingantenna.
•Increase the separation between the equipment andreceiver.
•Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
•Consult the dealer or an experienced radio/TV technician for help.
Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your
authority to operate this equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This
device may not cause harmful interference, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
RF Exposure Information
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment
should be installed and operated with minimum distance 20cm between the radiator and your body.

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