Handmade items to support play for children with disabilities. These items allow battery-operated toys to be controlled with a welfare switch. Set of 2 for AA/AAA batteries. 【How to Use】 * Insert the insulated part (round metal part) between the battery and connect the jack to the 3.5 mono plug of the welfare switch. * Turn ON the original switch of the toy. * The toy will move when the welfare switch is turned ON. * The timing of the toy's movement varies depending on the type of switch. * For example, there are momentary switches (ON while pressed, OFF when released) and alternate switches (ON when pressed, locked, and OFF when pressed again to unlock). * Cannot be used with toys that turn ON with stimuli such as sound, vibration, tilt, or light, or with toys that use a parallel circuit (most are series circuits) for the batteries. 【Specifications】 * 3.5 mini jack * Length: Approximately 20 cm * Insulated part: Φ10 mm for AA/AAA batteries 【Important Notes】 * Even commercially available products are very fragile and can be easily disconnected if frequently inserted and removed from the battery box or if pulled forcefully. * Depending on the toy, the BD adapter may not be able to be inserted, or processing may be required for the cord to pass through. * When inserting on the negative side of the battery, some batteries have a concave center compared to the edge. In this case, a space will be created between the adapter and the battery, and electricity will not flow. * When inserting on the positive side of the battery, depending on the shape of the battery box, a space may be created between the battery and the adapter, and electricity will not flow. * If the BD adapter is disconnected, it can be repaired by soldering. * The edges of the copper plate are made as smooth as possible, but since it is thin metal, please be careful not to injure the skin. Especially, please be careful that children do not touch it. 【Price and Shipping】 * Shipped via Rakuraku or Yuuyu Mercari service. * We do not offer discounts.