Feature: 1. 3 Types of Power Supply: This signal generator supports 3 types of power supply, making it more convenient to use. Voltage and current regulation can be switched in one click, with independent wiring and synchronised output. 2. Wide Application: The signal generator is widely used in transmitters, secondary instruments, PLC control cabinets, valve manipulators, industrial automation DCS systems, etc. 3. Safe and Reliable: The generator output is protected against short circuit and the power supply is protected against reverse connection, making it safe and reliable. 4. Pluggable Terminal Block: The signal generator uses pluggable terminal blocks for easy installation, stable performance and portability. 5. 4 Digital Tube Display: The generator has a 4 digit digital tube display with high brightness and three switchable display modes, i.e. voltage, percentage and HZ. Specification: Item Type: Signal Generator Material: ABS Power Supply Protection: MicroUSB, external 15-30VDC, built in lithium battery three kinds of power supply, external power supply with anti reverse connection design Suitable Range: Widely applicable to modern industry Operating Temperature: -10-60°C Battery: 1 x 3.7V lithium battery (1000mAh) (included) Working Humidity: <80% Widely Used: Transmitters, secondary instruments, PLC control cabinets, valve manipulators, industrial automation DCS systems, etc.. Package List: 1 x Signal Generator1 x Screwdriver1 x USB Cable