The Aqara Single Switch Module T1 (No Neutral), model SSM-U02, is a single-channel relay module that can be easily integrated into your smart home system and does not require a neutral wire. Operating with the Zigbee 3.0 wireless communication protocol, this device hides behind your existing wall switches or inside lighting fixtures, turning your traditional switches into smart ones. When used with an Aqara Hub, it allows you to use features such as remote control via smartphone app, scheduling, and HomeKit integration. Thanks to its compact dimensions (42.9x40x21.4 mm), the module can fit even in tight spaces, operates in a voltage range of 100-250V AC, and can control resistive loads up to 1250W (maximum 5A). The ability to work without a neutral wire offers a significant advantage, especially in older electrical installations. The device features advanced safety measures such as overheat protection and remembers the state of devices after a power outage, keeping them in your desired configuration. This module is ideal for making single-pole switches smart in homes without a neutral wire. While preserving the functionality of your existing switch, it allows you to create automation scenarios with other smart devices in the Aqara ecosystem, such as motion or door sensors. For example, when used in conjunction with a motion sensor, it can automatically turn off lights when you leave the room. Technical Specifications: - Model: SSM-U02 - Wireless Protocol: Zigbee 3.0 - Rated Voltage: 100-250V AC - Maximum Current: 5A - Maximum Load (Resistive): 1250W - Frequency: 50/60Hz - Operating Temperature: 0-35°C - Dimensions: 42.9x40x21.4 mm - Zigbee Frequency: 2405-2480 MHz - Maximum Output Power: ≤13 dBm - Neutral Wire Requirement: Not required - Compatibility: Aqara Hub with HomeKit