Choose the Right LTE Technology for Your IoT Use Case（日本語）

「TRB255」は2つのLTEカテゴリ（CAT-M1とNB & IoT）を統合しています。CAT-M1の遅延は約10～15ミリ秒ですが、NB & IoTの遅延は約1.6～10秒です。パニックアラートボタンとして使用する場合は、CAT-M1の方が信頼性の高い選択肢となります。

MIMOはMultiple-Input Multiple-Output（複数入力複数出力）の略です。これは、複数の送信機と受信機（つまり、信号が通過するストリーム数の増加）を使用して、より多くのデータを同時に転送する無線技術です。ストリーム数が増えるほど、接続性が向上します。MIMOを追加すると、接続速度が大幅に向上します。

Yes, it operates worldwide. Stating every single country in which it operates would expand the product page too much for a convenient user experience, so to find out which model of TRB245 device will best suit a particular country, please contact our sales team here and they will gladly advise you.

CAT-M1/NB-IoT were designed with the goals of lowering power consumption and extending battery life, unlike other CATs, which focus on optimal performance. This means that such a device would need double modules. As Teltonika Networks does not manufacture modules by itself, we currently don’t have an answer on if and when we will have such a device.

We always recommend choosing the most cost-efficient LTE technology for your solution. In devices using CAT6 and up, you can rely on Carrier Aggregation functionality, which doubles or triples the available speed. This means that in most cases, the LTE category has a more significant impact on your connectivity speed than an antenna, which can get expensive. However, keep in mind that in some locations, your provider may not support higher LTE categories. In such case, only additional antennas can improve connectivity speed.