Note that you can individually erase any code (including the Program code) directly from the keypad
Use Of The Hard Code As A “Masterkey”: The primary use for the Hard code is to allow simple single code “fixed” operation. The Hard code can only be set or changed from the “Hard Code” button in the CPU board. It is deliberately kept separate from all programming functions.
Another use for it, however, is as a “masterkey” code since tis code can not be accidently erased by careless programming.
Subset Codes: Since the DK-26 accepts multiple codes of different lengths, it is possible that one code will be a subset of another.
The DK-26 avoids this problem by rejecting any code that is a subset of another code in memory. The DK-26 will also reject the attempt to program a duplicate code.
If your client is planning to allow individuals to choose their own codes without reference to a list, they may have to try alternate codes if the one they prefer is rejected as a subset.
Setting The Time Range And Toggle Mode: The DK-26 will release the lock it controls for 1 to 99 seconds (default time is 5 seconds)
The DK-26 will operate in toggle mode. In toggle mode operation, the relay will energize when a correct code is entered and de energize when a correct code is entered a second time.
When you have enabled toggle mode, activation of the REX input will successively energize and deenergize the lock control relay (just as if you entered the User code)
LED And Beeper Operation: As delivered, the DK-26 echoes key presses by a short beep and a short flash of the green LED.
The red LED comes on to show that the door has been released and also to confirm or reject programming commands (two flashes confirm; one rejects).
You can reverse the red/green LED logic so that the green light comes on when the red light did, and visa versa.
The beeper can also be re-programmed to sound when the door is released. Note that the beeper will continue to sound for its other functions. Beeping upon unlock is helpful if a silent type of electric lock such as an electromagnetic lock is being used.
When the person hears the beeper they know the door is unlocked.
Programmable Relay: The DK-26 CPU board includes a second 5 Amp, SPDT relay which may be programmed for different functions
Doorbell Function: By default the programmable relay will operate when the Bell key is pressed so persons outside the controlled door can request entry.
Duress Function: The duress function used for high security applications allows a person being threatened to release the door but simultaneously create a silent alarm which would be employed to summon assistance. To make this work, obviously the threatened authorized person has to enter something different than a standard User code. For this application the Hard Code is designated as a duress code. When a user code is entered, the door will open but when the Hard code is entered, the door will open and the programmable relay will switch. Connect the programmable relay contacts to a remote alarm or alarm panel, etc.
Anti-Tamper Alarm Function: Pressing 16 wrong digits will put the DK-26 into alarm. The keypad’s beeper and green LED will operate for 30 seconds during which time the keypad will accept no input. The programmable relay to operate during the alarm period.
Door Prop Alarm Function: This function activates the programmable relay to produce an alarm signal any time the door is left open too long after a valid entry or egress.
For this function a door position sensor must be installed on the subject door and connected to the DK26 cpu.
If the door is opened and recloses before the time expires, it will resecure immediately providing anti-tailgating.
If the door remains open for a longer period of time than is set on the timer, the programmable relay will switch and will remain energized until the door closes or the keypad is used again.
Note that if you are using the programmable relay for another function you can still enable this anti-tailgating but no alarm signal will be available.