Darkroom  Timer    

Darkroom timer RDT-30 with red caution light is a newly

developed intelligent product,we adopt singlechip programming.

Technology in control sector of the machine,regular time

is  0-30 min，and min,sec can be set respectively，it is of high

accuracy and easy to operate.

High brightness LED is installed  in luminouscomponen, besides,

it enjoys a long lifespan and it’s brightness is adjustable.

 

Operations 

1. The screen with “05” will show when power is turned on; 

2. Range of set time 1 second to 30mins.  

Timer setting:  

Step1:Min setting: press the button Set once  , the two digits 

will be fleshing and you can set the numberofmins by pressing 

the up and down buttons, the maximum  is 30;  

Step2:Sec setting: Press the button Set again ,the two digits

will be fleshing and you can set the number of secs by pressing

the up and down buttons, the maximum is 59; Pressing the 

button Set again and the setting is finished. 
3.Press the button Start/Stop when setting is finished and it will

start to recount , It will start to alarm from the last 15 seconds

and the screen will be fleshing when the time is up.

Press the Start/Stop button the timer will return to the time you set.