Photon: NetworkSerializationHandler usage example

using UnityEngine;

public class FlashlightController : Photon.MonoBehaviour, INetworkHandler {

    public GameObject flashlight;

    public KeyCode toggleFlashlight = KeyCode.F;

    void OnEnable() {
        GetComponent<NetworkSerializationHandler>().Hook(this);
    }

    void OnDisable() {
        GetComponent<NetworkSerializationHandler>().Unhook(this);
    }

    void Update() {
        if(photonView.isMine) {
            if(Input.GetKeyDown(toggleFlashlight))
                flashlight.SetActive(!flashlight.activeSelf);

            RaycastHit hit;

            if(flashlight.activeSelf && Physics.Raycast(Camera.main.ScreenPointToRay(Input.mousePosition), out hit, Mathf.Infinity))
                flashlight.transform.LookAt(hit.point);
            else
                flashlight.transform.localRotation = Quaternion.identity;
        }
    }

    public void OnNetworkWrite(PhotonStream stream, PhotonMessageInfo info) {
        stream.SendNext(flashlight.activeSelf);
        stream.SendNext(flashlight.transform.rotation);
    }

    public void OnNetworkRead(PhotonStream stream, PhotonMessageInfo info) {
        flashlight.SetActive((bool)stream.ReceiveNext());
        flashlight.transform.rotation = (Quaternion)stream.ReceiveNext();
    }
}