Note:

1) 

To ensure high precision readings, user should perform the auto-cleaning if unused for more than 2 weeks (es-

pecially for the first time of using). User should start the auto-cleaning process by removing the batteries and power up 
again. The 

“AUTO CLEANING”

 indicator flashes. The 5-minutes auto cleaning starts and the display counts down. Ritmix 

RAT-501 will give few beep sounds at the last minute of auto cleaning. The analyzer will then turn off automatically after 
1 minute and the cleaning process finishes. Before formal test, make sure no alcohol residues left by blowing fresh air into 
the gas inlet.

2) 

Please notice that pressing the

 ON/OFF

 key at any time can easily terminate the auto-cleaning process.

3) 

To achieve an accurate reading, user should ensure there is no alcohol residue inside the chamber before starting 

a new alcohol test. Users can pre-check the tester until the

 ‘LOW’ 

indication is shown on the display. This may be achieved 

by pressing 

START

 key once. Holding the

 BLOW 

key and blow fresh air into gas inlet for about few seconds. Alternatively, 

shaking the unit forwards and backwards several times will allow any alcohol residue to leave before starting a new alco-
hol test.

4) 

After any 4 consecutive tests, allow the device to rest for 2 minutes.

5) 

An error message 

“Err”

 flashes on the display for 5 seconds for the following improper operations:-

 

i. 

When user does not hold the

 BLOW

 key for at least 7 seconds during blowing until a beep sound is heard.

 

ii.  When user fails to start the test within 8 seconds after 

“READY”

 flashes.  

 

6) 

When the product is unused, please store in a dry environment.

7) 

When low battery inductor flashes, the reading is not valid, please replace the batteries immediately.

8) 

If the difference between two successive reading >0.1

‰

, user should test again.

9) 

0.5

‰

 BAC = 0.05% BAC = 0.25mg/l

Specification:

 

1. Range:   

 

 

 

0.0 ~ 1.5

‰

 BAC 

2. Power Input: 

 

 

 

3 x 1.5 AAA Battery 

3. Display:   

 

 

 

LCD display with Backlighting 

4. Auto Power Off: 

 

 

 

2 minutes 

5. Breath Sampling: 

 

 

 

not less than 7 seconds continuous breath sample 

6. Recycle Time: 

 

 

 

~30 seconds  

7. Dimension: 

 

 

 

107 x 45 x 25 mm 

8. Weight:   

 

 

 

53 g (without battery) 

9.Accessory: 

 

 

 

3 pcs blowing tubes