1 Contents
3
8 Service and maintenance .......................................... 17
8.1. Replacing the batteries .................................. 17
8.2. Maintenance .................................................. 18
8.3. Calibration ..................................................... 18
8.4. Storage .......................................................... 18
8.5. Cleaning ........................................................ 18
9 Technical data ............................................................ 19
9.1. General technical data ................................... 19
9.2. More technical data ....................................... 20
9.2.1. testo 770-1/-2 ........................................................ 20
9.2.2. testo 770-3 ............................................................ 21
9.3. Bluetooth module (testo 770-3 only) .............. 23
10 Tips and assistance ................................................. 24
10.1. Questions and answers ............................... 24
10.2. Accessories and spare parts ........................ 24
11 Authorizations (testo 770-3 only) ........................... 24
11.1. Certifications ................................................ 26
11.2. Declaration of Conformity ............................ 27
12 Protecting the environment .................................... 27