What to do if LCD displays “Please try again” on ZK S900?
If the LCD on your ZK Touch terminal displays “Please try again”, it could be due to a dirty or scratched fingerprint sensor, preventing a clear image. Clean the sensor with a moist tissue. Alternatively, the fingerprint sensor cable might be loose, or the sensor may need repair or replacement.
Why some users’ fingerprints sometimes can’t be verified on ZK Touch terminals?
If some users' fingerprints are not verified on ZK Touch terminals, the fingerprint quality may be poor. Try enrolling a different finger. You can also reduce the fingerprint “threshold” setting. If the fingerprints are completely unreadable, assign the user a PIN number instead.
How to fix ZK S900 Touch terminal unable to connect with PC?
If your ZK S900 Touch terminal can't connect to your PC, the connection may be loose. Check that the RS232/RS485 or Ethernet connections are secure. Also, ensure that network or firewall settings are not blocking communication to the S900.
What to do if the fingerprint sensor light is off on ZK S900 Touch terminals?
If the fingerprint sensor light is off on your ZK Touch terminal, the fingerprint sensor or flat connection cable may be loose or broken. Unplug the cable from the fingerprint sensor and plug it back in again.
What to do if ZK S900 Touch terminal starts up, but cannot enter menu system?
If your ZK S900 Touch terminal starts up but cannot enter the menu system, the fingerprint sensor cable might be loose, the fingerprint sensor might be broken, or the circuit board might be broken. Remove the fingerprint sensor cable and plug it back in.
How to fix time continually displays “00:00” after restarting ZK Touch terminals?
If the time continually displays “00:00” after restarting your ZK Touch terminal, the clock battery is likely drained. Replace the battery.
How to fix pressing buttons no longer makes sound on ZK S900 Touch terminals?
If pressing buttons no longer makes a sound on your ZK Touch terminal, there may be trouble in the buzzer, loudspeaker, or circuit board. Replace the buzzer and loudspeaker.
How to troubleshoot Power LED is off on ZK S900 Touch terminals?
If the Power LED is off on your ZK Touch terminal, it indicates no power or a lack of voltage. Check and examine the power and ground connections. Also, ensure 12V DC power.
General| Brand | ZK |
|---|---|
| Model | S900 |
| Category | Touch terminals |
| Language | English |
Diagram illustrating the S900 device and its connections to peripherals.
Details on connecting the S900 via RS232, RS485, or Ethernet networks.
Instructions for securely mounting the S900 device on a wall.
Guides for connecting door sensors, locks, alarms, and network interfaces.
How to reset the S900 device using the reset button.
Explains the alarm signal triggered by the tamper switch.
How to use the USB port for data upload and download.
Details on using the optional built-in proximity card reader.
Information on using the optional MIFARE card reader for templates.
Details on using the optional HID card reader with 125KHz cards.
Overview of the S900's Wi-Fi capability for network communication.
Step-by-step guide for setting up the S900's wireless network connection.
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