Green light flashes red on first alert sc9120b/co 9v backup

It means it is receiving a signal. It is good to read the manual when you first get it, and then again after you have used it a few dozen times.

BaoFeng BF-888S

https://baofengtech.com > BF888s_Manual

PDF BaoFeng BF-888S ... Lights red during transmit, green when receiving a signal ... you that battery needs recharging. Alert tone will sound and Red LED will blink.
7 pages

..

http://www.orionair.co.uk/fujitsu_asyg_Fault_codes.htm
Try using this link to find the code. You will need your model number.

Try unplugging the alarm clock and removing the 9v backup battery. Let it sit for about 60 seconds. Reinstall the battery, plug in and reset the time.

Mine is doing same thing after 2 hrs. I tried 3 new batteries and still having problem so I hope someone has an answer as to what is causing this. Thanks.

Hi hislop_amand,

I know this is coming to you late yet I just seen your post and hope the following can still help you or others.

Kind Regards,
SD

FIRST ALERT Model: 9120 9120B

Normal Operation (AC Power)
Green LED ON; flashing Red LED once/ minute
No Audible Alarm

Normal Operation (DC Power - 9120B only)
Green LED OFF; Red LED flashes once/minute
No Audible Alarm

Assuming the "squiggle line" is the Utility LED the unit has proper power. The light is steady green and not flashing, correct?

Have you reset the unit?

Try removing all but one attached device to verify it's not an overload condition.

A photo of the control panel would help.

Change the 9V backup battery,with a new one.Push and hold the reset button for a minute or two for the alarm to to go off like about 30-40 sec. for the smoke detector to dectected the 9V backup battery power sourced.The green power LED light indicator will stop flashing also the beeping sounds too.

just a system awareness alert by flashing the light! you will be fine. good luck

LED Display gives you your display visual alerts, signal strength, and operation mode. Here is an attached link for the manual.....http://www.uniden.com/pdf/LRD6399SWSom.pdf
But to answer your question here is what the difference between the green light and the red light are:
1. X-Band Signal Indicator—A green LED lights and blinks to
indicate the presence of an X-band radar signal. The blink rate
increases as the radar source gets closer. A distinct audio alert is
also heard.
2. K-Band Indicator— An amber (orange) LED lights and blinks to
indicate the presence of a K-band radar. The blink rate increases as
the radar source gets closer. A distinct audio alert is also heard.
3. Ka-SuperWideband Signal Indicator— A yellow LED lights and
blinks to indicate the presence of a Ka-SuperWideband radar
signal. The blink rate increases as the radar source gets closer. A
distinct audio alert is also heard.
4. Laser Signal Indicator— A red LED under L lights and blinks to
indicate the presence of a laser signal. A distinct audio alert is also
heard.
5. SWS Signal Indicator— When an early warning hazard or
informational signal is detected, the yellow SWS LED begins to
blink and the amber K-band LED lights. A distinct audio alert is
also heard.
6. Power-On Indicator— A green LED under P lights to indicate
power is being supplied to the unit and the unit is turned on.
7. LED Signal Strength Meter—Four LEDs give an accurate visual
indication of the strength of radar or laser signals.
8. City Mode Indicator—A green LED under C lights to indicate
that you selected City Mode.
9. Auto Mute Indicator— A red LED under M lights to indicate that
you selected the Auto Mute feature.

Please make sure you give me a rating and I hope this helps,
cbinny1