Full Product Manual
1. Delete a number from White List: press ACCEPT, then UP/DOWN to nd that number, press DELETE twice to delete.
2. Redo custom message. Refer to Custom Set Up.
3. Turn o SENTRY’S ringer: press RINGER to choose RINGER ON or OFF, press DEL/EXIT to save.
4. Turn on BLOCK NO CID: Press and hold REJECT until BLOCK NO CID shows on screen. Then press Up/Down to toggle.
All calls with no CID will be rejected directly.
5. Replace batteries: when REPLACE BATTERY is ashing, replace batteries
immediately. SENTRY will not function when REPLACE BATTERY is ashing.
6. Brightness: press and hold number 9 until “brightness” appears on the screen. Use up/down to adjust the setting.
Press del/exit when done.
Functions (less used)
SENTRY Support line: 714.361.4615
e-mail: questions@plugnblock.com
www.plugnblock.com
Working voltage：2.8-5 V Current： 1-5 MA, requires 3 AAA batteries.
FSK /DTMF sensitivity rate: -25 to -35 DBM
Signal - Noise Ratio: 6-50 DB
PSTN wired network: compatible with corded & cordless phone，VOIP phone
Specications
FAQ
What if the spammer presses 0 after hearing the warning?
It almost never happens in reality, as long as your warning message doesn’t sound too inviting. If it does happen, nd it
in the White List, press and hold REJECT to move it to Black List.
1.
What if I don’t want to hear the single phone ring from blocked calls?
You can press and hold RINGER until ALLOW 1 RING shows, press again to change to ALLOW 0 RING, then DEL/EXIT to
save. Please note that certain telephone sets will not show caller ID when ALLOW 0 RING is on.
2.
What if I wait for a call that is not on White List, like delivery, pharmacy, etc?
You can turn SENTRY off temporarily by ON/OFF button. When SENTRY is OFF, it allows all calls to come through,
except Black List callers. Afterwards please don’t forget to turn SENTRY back on.
3.
8. Visit www.plugnblock.com for more information
7. More questions? call 714.361.4615
5. Frozen up? Disconnet phone cables and remove batteries can reset the unit.
6. How many messages can SENTRY save? Two, the older message will be automatically saved over.
Do I need to add “1” to phone numbers when creating the White List?
Please check the caller IDs showing on your home phone. If you see CID displaying as “1+10 digit” on your phone,
then you need to add “1” in front of area code.
4.