DG Flugzeugbau LS4 - 9.8 Thermometer; 9.9 Electrical Supply; 9.10 Equipment, not being part of minimum equipment:

Maintenance Manual LS4
Issued: May 2011
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
Manual valid with the up-to-date cover page only
9-4
9.8 Thermometer
Only necessary with fin tank installed
Manufacturer
Type
Störck
TF-00-059K, sensor in landing gear box or
in air duct
9.9 Electrical Supply
Only sealed batteries with built in fuse may be used.
Vertical Tail Fin Battery: Optional. Only batteries according to drawing
No. 3BR-185a are approved for use.
Battery in baggage compartment: Optional. Fixing to landing gear box only
according to section 8.3. E.g. Dittel ZT 092 12 V 6.5Ah with test set
Position of main fuse: At battery
Position of instrument fuses: At instrument panel.
Name: Microfuse 20x5 mm DIN 41571
Rating: 2A quick action for radios.
1A quick action for electrical variometers and turn and bank.
indicator
9.10 Equipment, not being part of minimum equipment:
Transponder: Units approved according to TSO, JTSO or ETSO for use
in airplanes can be installed.
Installation of transponder and transponder antenna must be accomplished
according to technical note DG-G-03.
Other equipment as gliding computers or loggers: These instruments
can be installed, as long as it is guaranteed, that they themselves or their
effect on the aircraft do not impair safe operation.
The installation must be must be accomplished according to technical note
DG-G-07.
After installation a new weighing report must be filed.