
Safe Digital Lock PS300/E31, PS300/ES01, PS300/E02 USER MANUAL
www.promet-safe.com
SAFE DIGITAL LOCK
PS300/E01, PS300/ES01, PS300/E02
USER MANUAL
1 Main Components
Fig. 1.1
1 – Keypad
2 – Folding handle
3 – Green LED [G]
4 – Red LED [R]
5 – Socket for emergency power
2 Definitions
2.1 Master Code [PIN1]
A set of numbers (from 6 to 8 digits) which
opens the lock and allows to operate the settings.
Before using the safe, please change the
factory Master code (see par.4.1). It is strongly
recommended to keep the master code safe
from unauthorized people.
No easily guessed numbers (birthdays, house
and phone numbers, etc.) or simple codes (1, 2,
3, 4, 5, 6) shall be chosen for the coding.
Factory Master Code:
1–2–3–4–5–6
2.2 User Code [PIN2]
A set of numbers from 6 to 8 digits which opens
the lock and has limited functions to change the
settings.
The lock with default factory settings does not
have the User code. Please see par.4.2 to set
the User code.
2.3 Signals
[G]1 Short single acoustic signal with single
green LED flash (3) – confirmation of the button
pressing on the keypad.
[G]2 Short double acoustic signal with double
green LED flash (3) – confirmation of successfully
finished operation.
[R]-- Long single acoustic signal with single
red LED flash (4) – error message on the user’s
actions.
[R]
5
Short acoustic signal sounds 5 times with
5 red LED flashes (4) – low battery message. Please
see par.5.1 how to change the battery.
3 Main Functions
3.1 Opening the Lock
3.1.1 Opening with the Factory Master code
[ON][1][2][3][4][5][6][Enter]
3.1.2 Opening with the Master Code
[ON][PIN1][Enter]
3.1.3 Opening with the User Code
[ON][PIN2][Enter]
If the code is right, there will be a green LED
flash and it will be possible to open the door within 5
seconds by turning the handle (2) clockwise.
If you enter a wrong code three times in a row,
the lock will be blocked for 5 minutes. The
blocking of the lock will be indicated periodical
red LED flashes.
3.2 Closing the Lock
Close the door and turn the handle (2) anti-
clockwise until it stops.
4 Service Functions
It is strongly recommended to change the
settings of the lock with the door opened.
After code changing, the lock shall be tested
several times with the secure storage unit’s
door in open state.
The service functions will be unavailable in
case low power supply which is indicated by the
signals, please refer to par.2.3, [R]5.
4.1 Changing the Master Code [PIN1]
[ON] [Enter] [1] [Enter] [PIN1] [Enter]
[new PIN1] [Enter]

Safe Digital Lock PS300/E31, PS300/ES01, PS300/E02 USER MANUAL
www.promet-safe.com
[repeat new PIN1] [Enter]
Checking the new Master code:
[ON][new PIN1][Enter]
4.2 Changing the User Code [PIN2] with the
Master Code [PIN1]
Before changing the User Code [PIN2] default
factory setting of Master code [PIN1] have to be
changed (see par.4.1).
[ON] [Enter] [2] [Enter] [PIN1] [Enter]
[new PIN2] [Enter]
[repeat new PIN2] [Enter]
Checking the new User code:
[ON][new PIN2][Enter]
4.3 Changing the User Code [PIN2] without the
Master Code
[ON] [Enter] [3] [Enter] [PIN2] [Enter]
[new PIN2] [Enter]
[repeat new PIN2] [Enter]
Checking the new User Code:
[ON][new PIN2][Enter]
4.4 Deleting the User Code
[ON] [Enter] [0] [Enter] [PIN1] [Enter]
5 Servicing
5.1 Changing the Battery
The battery is located on the inner side of the
door. Depending on the safe model, battery
could be either inside the lock battery
compartment (Fig.5.1a) or in a special pull-out
battery box (Fig.5.1b).
Take out the cover of the battery compartment
of the lock (see Fig. 5.1a. or pull out the box
(see Fig. 5.1b).
Fig. 5.1 a. b.
Install a new battery (9V, type 6LF22).
Take the cover or the box back to their location.
5.2 Opening the lock when the Battery is
Discharged
Take a new battery (9V, type 6LF22).
Press the new battery to emergency power pins
and fix it in this position (see Image 5.2).
Do not make the battery’s contacts to the metal
parts of the lock.
Fig.5.2
Enter the valid code on the keypad (1).
Disconnect the emergency battery, open the
door and change the discharged battery, see
par. 5.1.