The Single Pole Double Throw (SPDT) relay is useful in certain projects because it has one common terminal and two contacts, making it ideal for selecting between two options. This SPDT Relay includes four SPDT switches and only requires low-voltage and low-current signals to control them. You can use a 5V DC signal to manage up to 250V AC or 110V DC. Additionally, its I2C address is adjustable, allowing you to use multiple relay modules in the same project. For a single SPDT Relay, click here to find it in our shop Features * High-temperature resistant plastic shell * High voltage load * Low power consumption * Long-Lasting * 128 Optional I2C address * Product Number: Seeed 103020133 Specifications Working Voltage 5V Nominal Coil Current 89.3mA TUV Certification Load 10A 250VAC/ 10A 30VDC UL Certification Load 10A 125VAC 28VDC Max. Allowable Voltage 250VAC/110VDC Power Consumption abt. 0.45W Contact Resistance 100mΩ Max. Insulation Resistance 100MΩ Min. (500VDC) Max. ON/OFF Switching 30 operation/min Ambient Temperature -40°C to +85°C Operating Humidity 45% to 85% r.h. Contact Material AgCdO Input Interface I^2^C Default I^2^C Address 0x11 or 0x12 Available I^2^C Address 0x00 - 0x7F Output Interface 3 Pins DIP Female Screw Terminal-Green Resources * Product Wiki * Eagle Files * Arduino Library Pinout Package Contents * 1x Grove - 4-Channel SPDT Relay * 1x Grove Cable * 1x Acrylic Case * 1x A bag of Nylonl Nuts, Studs and Bolts https://elecena.pl/product/26985542/grove-4-channel-spdt-relay 2024-10-04 https://elecena.pl/product/26985542/grove-4-channel-spdt-relay 2024-11-29 https://elecena.pl/product/26985542/grove-4-channel-spdt-relay 2024-11-30 https://elecena.pl/product/26985542/grove-4-channel-spdt-relay 2025-09-29 https://elecena.pl/product/26985542/grove-4-channel-spdt-relay 2025-11-28 https://elecena.pl/product/26985542/grove-4-channel-spdt-relay 2025-11-29