Hi
You need CR1616 LITHIUM CELL.
3.0 V and 16 mm diameter
Average life is approx 7 years !
Other labels are : DL 1616, ECR1616, BR1616, 280-209,
Replacement Cross : DL 1616B,CR1616-1W, LM1616,
Reference Guide : KCR1616, 5021LC, L11, L28, YA
Operating Temperature Range : -20°C to 60°C (-4°F to 140°F)
Such batteries are also used in : Car security, organizers, glucometer equipment, cameras, electric thermometers, calculators TI 83 (Plus), toys, accutron, communication equipment, electronic watches/clocks, card radios, data packs for video cameras, led lights, keyless entry, and garage door openers ….
I hope I helped you
Greet
