Handmade items to support play for children with disabilities. These items allow battery-operated toys to be controlled with a special needs switch. Set of 2: one for single D/C batteries and one for single AA/AAA batteries. 【How to Use】 * Insert the insulated part (round metal part) between the battery and the toy's battery terminal, and connect the jack to the 3.5mm mono plug of the special needs switch. * Turn ON the original switch on the toy. * When the special needs switch is turned ON, the toy will operate. * The timing of the toy's operation 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). * These adapters cannot be used with toys that are activated by stimuli such as sound, vibration, tilt, or light, or with toys that use parallel circuits (most use series circuits) for their batteries. 【Specifications】 * 3.5mm mini jack * Length: Approximately 20cm * Insulated part: Φ13mm for single D/C batteries, Φ10mm for single AA/AAA batteries 【Important Notes】 * Even commercially available products are very fragile and can be easily damaged by frequent insertion and removal from the battery box or by pulling on them too hard, which can cause the wires to break. * Depending on the toy, the BD adapter may not fit, or modifications may be needed for the cord to pass through. * When inserting the adapter on the negative side of the battery, some batteries have a concave center compared to the edges. In this case, there may be a gap between the adapter and the battery, preventing electrical contact. * When inserting the adapter on the positive side of the battery, depending on the shape of the battery box, there may be a gap between the battery and the adapter, preventing electrical contact. * If the BD adapter wire breaks, 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. Please be especially careful to keep it out of reach of children. 【Price and Shipping】 * Shipped via Rakuraku or Yu-Yu. * No price reductions are available.