On the left or above you see an example of a one or two ER3 batt. extern / intern antenna combination, rucksack fixing 20 / 34g model.
On the left or above you see a capacitor powered solar cell model, no battery inside, depending on the amount of daylight the trans. has got, it may stop transmitting at night.
The lifetime stated here is based on 15 mS pulse length and 3000 mS pause. Weight is taken with minimal potting and a non shrinked, 0.2 mm steel whip antenna with 15 cm length, antenna shrinking for better protection adds some weight and using 2 wires to be soldered reduces some weight.
1. is a 1/V357 type / 190 mA / 2.8 g / with reed switch / rucksack fixing / 5 month lifetime
2. is a 1/V393 type / 80 mA / 1.6 g / with reed switch / glue on type / 2 month lifetime
3. is a 1/V392 type / 45 mA / 1.2 g / with reed switch / rucksack fixing / 1 month lifetime
4 is a 1/V361 type / 23 mA / 0.7 g / solder 2 wires / glue on type / 2 weeks lifetime