Product Quantity Subtotal Mini MP1584 DC-DC 3A Adjustable Buck Module $0.46 Mini MP1584 DC-DC 3A Adjustable Buck Module quantity × $0.46 Mini MP1584 DC-DC 3A Adjustable Buck Module quantity $0.46 Ai Thinker EPS Module ESP-12S ESP8266 Serial WiFi Module $1.01 Ai Thinker EPS Module ESP-12S ESP8266 Serial WiFi Module quantity × $1.01 Ai Thinker EPS Module ESP-12S ESP8266 Serial WiFi Module quantity $1.01 36W 3A Short Distance IR Hand Sweep ON-OFF Sensor Module $0.75 36W 3A Short Distance IR Hand Sweep ON-OFF Sensor Module quantity × $0.75 36W 3A Short Distance IR Hand Sweep ON-OFF Sensor Module quantity $0.75 Waterproof Ultrasonic Obstacle Sensor, Reversing Radar Sensor with Separate Probe $0.28 Waterproof Ultrasonic Obstacle Sensor, Reversing Radar Sensor with Separate Probe quantity × $0.28 Waterproof Ultrasonic Obstacle Sensor, Reversing Radar Sensor with Separate Probe quantity $0.28 Coupon: Apply coupon Update cart Cart totals Subtotal $2.50 Total $2.50 — OR — Proceed to checkout