Both the Tower and the Bridge allows you to map Incoming to Outgoing protocols.
Here you get an overview of what is possible in terms of mappings. In addition, you have a table that explains the difference between the Tower and Bridge functionality.

EM300-DI LoRa®

A compact pulse counter that transforms traditional meters into wireless intelligent meters.

WS101 LoRa®
Wireless Smart button for controls, triggers and alarms.
Supports multiple press actions, which can be configured to control devices or trigger scenarios.
Comes with NFC.

WS5xx LoRa®
Supports switching devices On/Off remotely or manually via a push button.
Measure Voltage (VAC), Current (mA), Power Factor (%), Power (W) and Power consumption (kWh).
Supports most international socket types.
Comes with NFC.

EM500-SMTC LoRa®

Measuring soil moisture, temperature and electrical conductivity in harsh environments.

IP66 rated with NFC.

Up to 10 years battery life.

WS302 LoRa®

A sound level sensor with integrated microphone.
Can measure a wide range of noise levels and supports multiple weighting measurements for different application scenarios.
Comes with NFC.

EM300-SLD LoRa®
Measuring temperature and humidity and spot leakage detecting presence of water or other liquids.
IP67 rated with NFC.
Up to 5 years battery life.

ERS LoRa®
Measuring temperature, humidity, motion (PIR) and light.
Comes with NFC.
Up to 10 years battery life.

ERS Lite LoRa®
Measuring temperature and humidity.
Comes with NFC.
Up to 10 years battery life.